Revert "Upgrade to Python3 (#3431)" (#3478) This reverts commit 257b1a439588a22b2d7959338ce7be50b02c4708

commit: 6846f709b8631827133e8ee67ebb23faa053aec8 [log] [tgz]
author: Nicholas Nezis <nicholas.nezis@gmail.com> Thu Mar 05 00:18:10 2020 -0500
committer: GitHub <noreply@github.com> Thu Mar 05 00:18:10 2020 -0500
tree: beb36f0b7d4ff91ea5ca34566ac5a0ffe2e866b4
parent: ee1c44aefa8a5a5dd4e1effcd736014af70ec3b6 [diff]
diff --git a/.travis.yml b/.travis.yml
index 7da0cfa..08dff22 100644
--- a/.travis.yml
+++ b/.travis.yml

@@ -19,7 +19,7 @@
       - g++-4.8
       - gcc-4.8-multilib
       - g++-4.8-multilib
-      - python3
+      - python2.7
       - wget
       - pkg-config
       - zip
@@ -46,6 +46,8 @@
   - gcc --version
   - which g++-4.8
   - g++ --version
-  - which python3
-  - python3 -V
+  - which python
+  - python -V
+  - which python2.7
+  - python2.7 -V
   - scripts/travis/ci.sh

diff --git a/README.md b/README.md
index 6d43483..c221c3e 100644
--- a/README.md
+++ b/README.md

@@ -30,7 +30,7 @@
 
 #### Heron Requirements:
  * Java 11
- * Python 3
+ * Python 2.7
  * Bazel 0.26.0
 
 ## Contact

diff --git a/bazel_configure.py b/bazel_configure.py
index 63d1248..02e67f1 100755
--- a/bazel_configure.py
+++ b/bazel_configure.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # Licensed to the Apache Software Foundation (ASF) under one
 # or more contributor license agreements.  See the NOTICE file
 # distributed with this work for additional information
@@ -413,7 +413,7 @@
   env_map['AUTOMAKE'] = discover_tool('automake', 'Automake', 'AUTOMAKE', '1.9.6')
   env_map['AUTOCONF'] = discover_tool('autoconf', 'Autoconf', 'AUTOCONF', '2.6.3')
   env_map['MAKE'] = discover_tool('make', 'Make', 'MAKE', '3.81')
-  env_map['PYTHON3'] = discover_tool('python3', 'Python3', 'PYTHON3', '3.4')
+  env_map['PYTHON'] = discover_tool('python', 'Python', 'PYTHON', '2.7')
 
   if platform == 'Darwin':
     env_map['LIBTOOL'] = discover_tool('glibtool', 'Libtool', 'LIBTOOL', '2.4.2')

diff --git a/config/configure.ac b/config/configure.ac
index caba2fa..b7ab890 100644
--- a/config/configure.ac
+++ b/config/configure.ac

@@ -100,8 +100,8 @@
 ACX_PTHREAD
 
 # Check the python version required
-AM_PATH_PYTHON([3.4])
-AC_PATH_PROG([PYTHON3], [python3], [],[])
+AM_PATH_PYTHON([2.4.3])
+AC_PATH_PROG([PYTHON], [python], [],[])
 
 abs_top_builddir=`pwd`
 AC_SUBST(abs_top_builddir)

diff --git a/examples/src/python/bolt/consume_bolt.py b/examples/src/python/bolt/consume_bolt.py
index 55df344..4a8f70b 100644
--- a/examples/src/python/bolt/consume_bolt.py
+++ b/examples/src/python/bolt/consume_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/bolt/count_bolt.py b/examples/src/python/bolt/count_bolt.py
index 0a9a33a..34ac1e8 100644
--- a/examples/src/python/bolt/count_bolt.py
+++ b/examples/src/python/bolt/count_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/bolt/half_ack_bolt.py b/examples/src/python/bolt/half_ack_bolt.py
index 5b6dab4..f7346cb 100644
--- a/examples/src/python/bolt/half_ack_bolt.py
+++ b/examples/src/python/bolt/half_ack_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/bolt/stateful_count_bolt.py b/examples/src/python/bolt/stateful_count_bolt.py
index 663f4ef..a3ea6b6 100644
--- a/examples/src/python/bolt/stateful_count_bolt.py
+++ b/examples/src/python/bolt/stateful_count_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/bolt/stream_aggregate_bolt.py b/examples/src/python/bolt/stream_aggregate_bolt.py
index 200a8d6..33b5d64 100644
--- a/examples/src/python/bolt/stream_aggregate_bolt.py
+++ b/examples/src/python/bolt/stream_aggregate_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/bolt/window_size_bolt.py b/examples/src/python/bolt/window_size_bolt.py
index 5604038..083b793 100644
--- a/examples/src/python/bolt/window_size_bolt.py
+++ b/examples/src/python/bolt/window_size_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/custom_grouping_topology.py b/examples/src/python/custom_grouping_topology.py
index 2d0f199..ec6e0e2 100644
--- a/examples/src/python/custom_grouping_topology.py
+++ b/examples/src/python/custom_grouping_topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/half_acking_topology.py b/examples/src/python/half_acking_topology.py
index e4fd3cc..7c89aeb 100644
--- a/examples/src/python/half_acking_topology.py
+++ b/examples/src/python/half_acking_topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/join_streamlet_topology.py b/examples/src/python/join_streamlet_topology.py
index 82c45dd..8667315 100644
--- a/examples/src/python/join_streamlet_topology.py
+++ b/examples/src/python/join_streamlet_topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/misc/test_task_hook.py b/examples/src/python/misc/test_task_hook.py
index f3eb767..8ad2eec 100644
--- a/examples/src/python/misc/test_task_hook.py
+++ b/examples/src/python/misc/test_task_hook.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/multi_stream_topology.py b/examples/src/python/multi_stream_topology.py
index 24aad64..7507e55 100644
--- a/examples/src/python/multi_stream_topology.py
+++ b/examples/src/python/multi_stream_topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/pulsar_word_count_streamlet.py b/examples/src/python/pulsar_word_count_streamlet.py
index 3e1a409..6d6d7d8 100644
--- a/examples/src/python/pulsar_word_count_streamlet.py
+++ b/examples/src/python/pulsar_word_count_streamlet.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/spout/multi_stream_spout.py b/examples/src/python/spout/multi_stream_spout.py
index 6ac7a69..8a2cc18 100644
--- a/examples/src/python/spout/multi_stream_spout.py
+++ b/examples/src/python/spout/multi_stream_spout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/spout/stateful_word_spout.py b/examples/src/python/spout/stateful_word_spout.py
index 6ea7670..9f368df 100644
--- a/examples/src/python/spout/stateful_word_spout.py
+++ b/examples/src/python/spout/stateful_word_spout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/spout/word_spout.py b/examples/src/python/spout/word_spout.py
index 036ff6a..a194da3 100644
--- a/examples/src/python/spout/word_spout.py
+++ b/examples/src/python/spout/word_spout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/stateful_word_count_topology.py b/examples/src/python/stateful_word_count_topology.py
index 7ca1ba7..1918dee 100644
--- a/examples/src/python/stateful_word_count_topology.py
+++ b/examples/src/python/stateful_word_count_topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/window_size_topology.py b/examples/src/python/window_size_topology.py
index d75efd3..d123199 100644
--- a/examples/src/python/window_size_topology.py
+++ b/examples/src/python/window_size_topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/word_count_streamlet.py b/examples/src/python/word_count_streamlet.py
index 4f2ecd6..112749f 100644
--- a/examples/src/python/word_count_streamlet.py
+++ b/examples/src/python/word_count_streamlet.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/examples/src/python/word_count_topology.py b/examples/src/python/word_count_topology.py
index c5de09e..0069b86 100644
--- a/examples/src/python/word_count_topology.py
+++ b/examples/src/python/word_count_topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/common/src/python/pex_loader.py b/heron/common/src/python/pex_loader.py
index 9603390..622e357 100644
--- a/heron/common/src/python/pex_loader.py
+++ b/heron/common/src/python/pex_loader.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/common/src/python/utils/log.py b/heron/common/src/python/utils/log.py
index f0de973..f3e4b01 100644
--- a/heron/common/src/python/utils/log.py
+++ b/heron/common/src/python/utils/log.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/common/src/python/utils/proc.py b/heron/common/src/python/utils/proc.py
index 969ab7f..2adcb29 100644
--- a/heron/common/src/python/utils/proc.py
+++ b/heron/common/src/python/utils/proc.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/common/tests/python/pex_loader/constants.py b/heron/common/tests/python/pex_loader/constants.py
index ff99926..63bdd27 100644
--- a/heron/common/tests/python/pex_loader/constants.py
+++ b/heron/common/tests/python/pex_loader/constants.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/common/tests/python/pex_loader/pex_loader_unittest.py b/heron/common/tests/python/pex_loader/pex_loader_unittest.py
index cf92ee1..06b4b64 100644
--- a/heron/common/tests/python/pex_loader/pex_loader_unittest.py
+++ b/heron/common/tests/python/pex_loader/pex_loader_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/common/tests/python/pex_loader/testdata/src/sample.py b/heron/common/tests/python/pex_loader/testdata/src/sample.py
index d9136f6..382bd6b 100644
--- a/heron/common/tests/python/pex_loader/testdata/src/sample.py
+++ b/heron/common/tests/python/pex_loader/testdata/src/sample.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/executor/src/python/heron_executor.py b/heron/executor/src/python/heron_executor.py
index 208cf77..c9d4501 100755
--- a/heron/executor/src/python/heron_executor.py
+++ b/heron/executor/src/python/heron_executor.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/executor/tests/python/heron_executor_unittest.py b/heron/executor/tests/python/heron_executor_unittest.py
index 061e054..255b958 100644
--- a/heron/executor/tests/python/heron_executor_unittest.py
+++ b/heron/executor/tests/python/heron_executor_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/basics/base_instance.py b/heron/instance/src/python/basics/base_instance.py
index c6e8d34..93ebed4 100644
--- a/heron/instance/src/python/basics/base_instance.py
+++ b/heron/instance/src/python/basics/base_instance.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/basics/bolt_instance.py b/heron/instance/src/python/basics/bolt_instance.py
index 0815e71..972baf0 100644
--- a/heron/instance/src/python/basics/bolt_instance.py
+++ b/heron/instance/src/python/basics/bolt_instance.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/basics/spout_instance.py b/heron/instance/src/python/basics/spout_instance.py
index 620de48..3b4dccf 100644
--- a/heron/instance/src/python/basics/spout_instance.py
+++ b/heron/instance/src/python/basics/spout_instance.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/instance/st_heron_instance.py b/heron/instance/src/python/instance/st_heron_instance.py
index ce2884a..569e5aa 100644
--- a/heron/instance/src/python/instance/st_heron_instance.py
+++ b/heron/instance/src/python/instance/st_heron_instance.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/network/event_looper.py b/heron/instance/src/python/network/event_looper.py
index 105f136..a4ffe78 100644
--- a/heron/instance/src/python/network/event_looper.py
+++ b/heron/instance/src/python/network/event_looper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/network/gateway_looper.py b/heron/instance/src/python/network/gateway_looper.py
index ee9d22a..4b13605 100644
--- a/heron/instance/src/python/network/gateway_looper.py
+++ b/heron/instance/src/python/network/gateway_looper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/network/heron_client.py b/heron/instance/src/python/network/heron_client.py
index feaa4c9..fa071d3 100644
--- a/heron/instance/src/python/network/heron_client.py
+++ b/heron/instance/src/python/network/heron_client.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/network/metricsmgr_client.py b/heron/instance/src/python/network/metricsmgr_client.py
index 22c38d1..1f63e26 100644
--- a/heron/instance/src/python/network/metricsmgr_client.py
+++ b/heron/instance/src/python/network/metricsmgr_client.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/network/protocol.py b/heron/instance/src/python/network/protocol.py
index 524d1bc..e15a85f 100644
--- a/heron/instance/src/python/network/protocol.py
+++ b/heron/instance/src/python/network/protocol.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/network/socket_options.py b/heron/instance/src/python/network/socket_options.py
index 6e777a9..d66c758 100644
--- a/heron/instance/src/python/network/socket_options.py
+++ b/heron/instance/src/python/network/socket_options.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/network/st_stmgr_client.py b/heron/instance/src/python/network/st_stmgr_client.py
index deddfd0..2e1bcb0 100644
--- a/heron/instance/src/python/network/st_stmgr_client.py
+++ b/heron/instance/src/python/network/st_stmgr_client.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/metrics/metrics_helper.py b/heron/instance/src/python/utils/metrics/metrics_helper.py
index e9d49ae..39555ba 100644
--- a/heron/instance/src/python/utils/metrics/metrics_helper.py
+++ b/heron/instance/src/python/utils/metrics/metrics_helper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/metrics/py_metrics.py b/heron/instance/src/python/utils/metrics/py_metrics.py
index 62d27a6..55636bd 100644
--- a/heron/instance/src/python/utils/metrics/py_metrics.py
+++ b/heron/instance/src/python/utils/metrics/py_metrics.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/misc/communicator.py b/heron/instance/src/python/utils/misc/communicator.py
index bf1b480..f43d4d8 100644
--- a/heron/instance/src/python/utils/misc/communicator.py
+++ b/heron/instance/src/python/utils/misc/communicator.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/misc/custom_grouping_helper.py b/heron/instance/src/python/utils/misc/custom_grouping_helper.py
index 335c3c3..18819d4 100644
--- a/heron/instance/src/python/utils/misc/custom_grouping_helper.py
+++ b/heron/instance/src/python/utils/misc/custom_grouping_helper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/misc/outgoing_tuple_helper.py b/heron/instance/src/python/utils/misc/outgoing_tuple_helper.py
index 77bfc37..71a7f81 100644
--- a/heron/instance/src/python/utils/misc/outgoing_tuple_helper.py
+++ b/heron/instance/src/python/utils/misc/outgoing_tuple_helper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/misc/pplan_helper.py b/heron/instance/src/python/utils/misc/pplan_helper.py
index b1e5ae3..e14c409 100644
--- a/heron/instance/src/python/utils/misc/pplan_helper.py
+++ b/heron/instance/src/python/utils/misc/pplan_helper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/misc/serializer_helper.py b/heron/instance/src/python/utils/misc/serializer_helper.py
index c1ddaac..b894788 100644
--- a/heron/instance/src/python/utils/misc/serializer_helper.py
+++ b/heron/instance/src/python/utils/misc/serializer_helper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/system_config.py b/heron/instance/src/python/utils/system_config.py
index 6801fc9..6327578 100644
--- a/heron/instance/src/python/utils/system_config.py
+++ b/heron/instance/src/python/utils/system_config.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/system_constants.py b/heron/instance/src/python/utils/system_constants.py
index fd75423..aa080b6 100644
--- a/heron/instance/src/python/utils/system_constants.py
+++ b/heron/instance/src/python/utils/system_constants.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/topology/topology_context_impl.py b/heron/instance/src/python/utils/topology/topology_context_impl.py
index 0e3541f..95687a0 100644
--- a/heron/instance/src/python/utils/topology/topology_context_impl.py
+++ b/heron/instance/src/python/utils/topology/topology_context_impl.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/src/python/utils/tuple.py b/heron/instance/src/python/utils/tuple.py
index 7b81c01..789141c 100644
--- a/heron/instance/src/python/utils/tuple.py
+++ b/heron/instance/src/python/utils/tuple.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/mock_protobuf.py b/heron/instance/tests/python/mock_protobuf.py
index fb5a147..13ed8e3 100644
--- a/heron/instance/tests/python/mock_protobuf.py
+++ b/heron/instance/tests/python/mock_protobuf.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/network/event_looper_unittest.py b/heron/instance/tests/python/network/event_looper_unittest.py
index 0fe3411..69f4249 100644
--- a/heron/instance/tests/python/network/event_looper_unittest.py
+++ b/heron/instance/tests/python/network/event_looper_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/network/gateway_looper_unittest.py b/heron/instance/tests/python/network/gateway_looper_unittest.py
index de8ecc7..8f8b348 100644
--- a/heron/instance/tests/python/network/gateway_looper_unittest.py
+++ b/heron/instance/tests/python/network/gateway_looper_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/network/heron_client_unittest.py b/heron/instance/tests/python/network/heron_client_unittest.py
index 68e4711..ead3a36 100644
--- a/heron/instance/tests/python/network/heron_client_unittest.py
+++ b/heron/instance/tests/python/network/heron_client_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/network/metricsmgr_client_unittest.py b/heron/instance/tests/python/network/metricsmgr_client_unittest.py
index 39cbe39..605d836 100644
--- a/heron/instance/tests/python/network/metricsmgr_client_unittest.py
+++ b/heron/instance/tests/python/network/metricsmgr_client_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/network/mock_generator.py b/heron/instance/tests/python/network/mock_generator.py
index e589328..708471b 100644
--- a/heron/instance/tests/python/network/mock_generator.py
+++ b/heron/instance/tests/python/network/mock_generator.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/network/mock_generator_client.py b/heron/instance/tests/python/network/mock_generator_client.py
index 0f88d6d..7e61cb0 100644
--- a/heron/instance/tests/python/network/mock_generator_client.py
+++ b/heron/instance/tests/python/network/mock_generator_client.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/network/protocol_unittest.py b/heron/instance/tests/python/network/protocol_unittest.py
index f408795..e76b0c3 100644
--- a/heron/instance/tests/python/network/protocol_unittest.py
+++ b/heron/instance/tests/python/network/protocol_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/network/st_stmgr_client_unittest.py b/heron/instance/tests/python/network/st_stmgr_client_unittest.py
index 9bc9855..1bc63b7 100644
--- a/heron/instance/tests/python/network/st_stmgr_client_unittest.py
+++ b/heron/instance/tests/python/network/st_stmgr_client_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/communicator_unittest.py b/heron/instance/tests/python/utils/communicator_unittest.py
index caf1c21..31f3a48 100644
--- a/heron/instance/tests/python/utils/communicator_unittest.py
+++ b/heron/instance/tests/python/utils/communicator_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/custom_grouping_unittest.py b/heron/instance/tests/python/utils/custom_grouping_unittest.py
index 00cc8ab..8ba69d1 100644
--- a/heron/instance/tests/python/utils/custom_grouping_unittest.py
+++ b/heron/instance/tests/python/utils/custom_grouping_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/global_metrics_unittest.py b/heron/instance/tests/python/utils/global_metrics_unittest.py
index 90df974..2216d76 100644
--- a/heron/instance/tests/python/utils/global_metrics_unittest.py
+++ b/heron/instance/tests/python/utils/global_metrics_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/log_unittest.py b/heron/instance/tests/python/utils/log_unittest.py
index 2fde7dd..daf6ccf 100644
--- a/heron/instance/tests/python/utils/log_unittest.py
+++ b/heron/instance/tests/python/utils/log_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/metrics_helper_unittest.py b/heron/instance/tests/python/utils/metrics_helper_unittest.py
index 6e23eb2..ad22024 100644
--- a/heron/instance/tests/python/utils/metrics_helper_unittest.py
+++ b/heron/instance/tests/python/utils/metrics_helper_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/mock_generator.py b/heron/instance/tests/python/utils/mock_generator.py
index 37e8274..8809096 100644
--- a/heron/instance/tests/python/utils/mock_generator.py
+++ b/heron/instance/tests/python/utils/mock_generator.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/outgoing_tuple_helper_unittest.py b/heron/instance/tests/python/utils/outgoing_tuple_helper_unittest.py
index c81bedc..62ff330 100644
--- a/heron/instance/tests/python/utils/outgoing_tuple_helper_unittest.py
+++ b/heron/instance/tests/python/utils/outgoing_tuple_helper_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/pplan_helper_unittest.py b/heron/instance/tests/python/utils/pplan_helper_unittest.py
index 427f28c..7de571f 100644
--- a/heron/instance/tests/python/utils/pplan_helper_unittest.py
+++ b/heron/instance/tests/python/utils/pplan_helper_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/py_metrics_unittest.py b/heron/instance/tests/python/utils/py_metrics_unittest.py
index 11bc4ae..33ab25c 100644
--- a/heron/instance/tests/python/utils/py_metrics_unittest.py
+++ b/heron/instance/tests/python/utils/py_metrics_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/topology_context_impl_unittest.py b/heron/instance/tests/python/utils/topology_context_impl_unittest.py
index 409dbb4..ed02412 100644
--- a/heron/instance/tests/python/utils/topology_context_impl_unittest.py
+++ b/heron/instance/tests/python/utils/topology_context_impl_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/instance/tests/python/utils/tuple_helper_unittest.py b/heron/instance/tests/python/utils/tuple_helper_unittest.py
index 04c2864..a169907 100644
--- a/heron/instance/tests/python/utils/tuple_helper_unittest.py
+++ b/heron/instance/tests/python/utils/tuple_helper_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/browsehandler.py b/heron/shell/src/python/handlers/browsehandler.py
index 760764c..c5a35ab 100644
--- a/heron/shell/src/python/handlers/browsehandler.py
+++ b/heron/shell/src/python/handlers/browsehandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/downloadhandler.py b/heron/shell/src/python/handlers/downloadhandler.py
index 20e6adf..9629e3f 100644
--- a/heron/shell/src/python/handlers/downloadhandler.py
+++ b/heron/shell/src/python/handlers/downloadhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/filedatahandler.py b/heron/shell/src/python/handlers/filedatahandler.py
index c0baa7b..7518560 100644
--- a/heron/shell/src/python/handlers/filedatahandler.py
+++ b/heron/shell/src/python/handlers/filedatahandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/filehandler.py b/heron/shell/src/python/handlers/filehandler.py
index ab26247..55fbf2c 100644
--- a/heron/shell/src/python/handlers/filehandler.py
+++ b/heron/shell/src/python/handlers/filehandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/filestatshandler.py b/heron/shell/src/python/handlers/filestatshandler.py
index 0c32af9..a3774ca 100644
--- a/heron/shell/src/python/handlers/filestatshandler.py
+++ b/heron/shell/src/python/handlers/filestatshandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/healthhandler.py b/heron/shell/src/python/handlers/healthhandler.py
index 19c8585..2455ad5 100644
--- a/heron/shell/src/python/handlers/healthhandler.py
+++ b/heron/shell/src/python/handlers/healthhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/jmaphandler.py b/heron/shell/src/python/handlers/jmaphandler.py
index 0352add..d147e5c 100644
--- a/heron/shell/src/python/handlers/jmaphandler.py
+++ b/heron/shell/src/python/handlers/jmaphandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/jstackhandler.py b/heron/shell/src/python/handlers/jstackhandler.py
index dd1c6ab..3e5181c 100644
--- a/heron/shell/src/python/handlers/jstackhandler.py
+++ b/heron/shell/src/python/handlers/jstackhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/killexecutorhandler.py b/heron/shell/src/python/handlers/killexecutorhandler.py
index b402319..fb2e56d 100644
--- a/heron/shell/src/python/handlers/killexecutorhandler.py
+++ b/heron/shell/src/python/handlers/killexecutorhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/memoryhistogramhandler.py b/heron/shell/src/python/handlers/memoryhistogramhandler.py
index 5ea48c7..7b355cf 100644
--- a/heron/shell/src/python/handlers/memoryhistogramhandler.py
+++ b/heron/shell/src/python/handlers/memoryhistogramhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/pidhandler.py b/heron/shell/src/python/handlers/pidhandler.py
index b63e5ae..da1c5c3 100644
--- a/heron/shell/src/python/handlers/pidhandler.py
+++ b/heron/shell/src/python/handlers/pidhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/handlers/pmaphandler.py b/heron/shell/src/python/handlers/pmaphandler.py
index fb507ce..acef828 100644
--- a/heron/shell/src/python/handlers/pmaphandler.py
+++ b/heron/shell/src/python/handlers/pmaphandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/main.py b/heron/shell/src/python/main.py
index c476eca..0f375c8 100644
--- a/heron/shell/src/python/main.py
+++ b/heron/shell/src/python/main.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/shell/src/python/utils.py b/heron/shell/src/python/utils.py
index bf9c1bd..ffbe2ce 100644
--- a/heron/shell/src/python/utils.py
+++ b/heron/shell/src/python/utils.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/src/python/config.py b/heron/statemgrs/src/python/config.py
index d32c2a1..14975b3 100644
--- a/heron/statemgrs/src/python/config.py
+++ b/heron/statemgrs/src/python/config.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/src/python/configloader.py b/heron/statemgrs/src/python/configloader.py
index 9fe98f2..384a5c7 100644
--- a/heron/statemgrs/src/python/configloader.py
+++ b/heron/statemgrs/src/python/configloader.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/src/python/filestatemanager.py b/heron/statemgrs/src/python/filestatemanager.py
index fca9cc4..ca56e56 100644
--- a/heron/statemgrs/src/python/filestatemanager.py
+++ b/heron/statemgrs/src/python/filestatemanager.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/src/python/log.py b/heron/statemgrs/src/python/log.py
index 3c3f800..cf23b29 100644
--- a/heron/statemgrs/src/python/log.py
+++ b/heron/statemgrs/src/python/log.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/src/python/stateexceptions.py b/heron/statemgrs/src/python/stateexceptions.py
index 639da76..69380d9 100644
--- a/heron/statemgrs/src/python/stateexceptions.py
+++ b/heron/statemgrs/src/python/stateexceptions.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/src/python/statemanager.py b/heron/statemgrs/src/python/statemanager.py
index ad591fa..a4affff 100644
--- a/heron/statemgrs/src/python/statemanager.py
+++ b/heron/statemgrs/src/python/statemanager.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/src/python/statemanagerfactory.py b/heron/statemgrs/src/python/statemanagerfactory.py
index a0d03b5..86b51f7 100644
--- a/heron/statemgrs/src/python/statemanagerfactory.py
+++ b/heron/statemgrs/src/python/statemanagerfactory.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/src/python/zkstatemanager.py b/heron/statemgrs/src/python/zkstatemanager.py
index 31cd056..438a019 100644
--- a/heron/statemgrs/src/python/zkstatemanager.py
+++ b/heron/statemgrs/src/python/zkstatemanager.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/tests/python/configloader_unittest.py b/heron/statemgrs/tests/python/configloader_unittest.py
index 7018cad..3549e66 100644
--- a/heron/statemgrs/tests/python/configloader_unittest.py
+++ b/heron/statemgrs/tests/python/configloader_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/tests/python/statemanagerfactory_unittest.py b/heron/statemgrs/tests/python/statemanagerfactory_unittest.py
index 0dcfcda..dea8cfe 100644
--- a/heron/statemgrs/tests/python/statemanagerfactory_unittest.py
+++ b/heron/statemgrs/tests/python/statemanagerfactory_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/statemgrs/tests/python/zkstatemanager_unittest.py b/heron/statemgrs/tests/python/zkstatemanager_unittest.py
index ee6da0e..8decf63 100644
--- a/heron/statemgrs/tests/python/zkstatemanager_unittest.py
+++ b/heron/statemgrs/tests/python/zkstatemanager_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/admin/src/python/main.py b/heron/tools/admin/src/python/main.py
index 7e901c4..4b27601 100644
--- a/heron/tools/admin/src/python/main.py
+++ b/heron/tools/admin/src/python/main.py

@@ -16,7 +16,7 @@
 #  under the License.
 
 
-# !/usr/bin/env python3
+# !/usr/bin/env python2.7
 ''' main.py '''
 import argparse
 import os

diff --git a/heron/tools/cli/src/python/activate.py b/heron/tools/cli/src/python/activate.py
index 3567484..daabcb5 100644
--- a/heron/tools/cli/src/python/activate.py
+++ b/heron/tools/cli/src/python/activate.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/args.py b/heron/tools/cli/src/python/args.py
index 60879d9..3d280ce 100644
--- a/heron/tools/cli/src/python/args.py
+++ b/heron/tools/cli/src/python/args.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/cdefs.py b/heron/tools/cli/src/python/cdefs.py
index d89cb25..a8ca744 100644
--- a/heron/tools/cli/src/python/cdefs.py
+++ b/heron/tools/cli/src/python/cdefs.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/cli_helper.py b/heron/tools/cli/src/python/cli_helper.py
index 51195fa..4b73661 100644
--- a/heron/tools/cli/src/python/cli_helper.py
+++ b/heron/tools/cli/src/python/cli_helper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/config.py b/heron/tools/cli/src/python/config.py
index 870ef03..a48a4f0 100644
--- a/heron/tools/cli/src/python/config.py
+++ b/heron/tools/cli/src/python/config.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/deactivate.py b/heron/tools/cli/src/python/deactivate.py
index 7cef5ab..9534de8 100644
--- a/heron/tools/cli/src/python/deactivate.py
+++ b/heron/tools/cli/src/python/deactivate.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/execute.py b/heron/tools/cli/src/python/execute.py
index df52641..ba2d982 100644
--- a/heron/tools/cli/src/python/execute.py
+++ b/heron/tools/cli/src/python/execute.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/help.py b/heron/tools/cli/src/python/help.py
index a535de8..6edd8a0 100644
--- a/heron/tools/cli/src/python/help.py
+++ b/heron/tools/cli/src/python/help.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/jars.py b/heron/tools/cli/src/python/jars.py
index 3215294..611de05 100644
--- a/heron/tools/cli/src/python/jars.py
+++ b/heron/tools/cli/src/python/jars.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/kill.py b/heron/tools/cli/src/python/kill.py
index 2b85fcd..d290269 100644
--- a/heron/tools/cli/src/python/kill.py
+++ b/heron/tools/cli/src/python/kill.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/main.py b/heron/tools/cli/src/python/main.py
index b343f16..a8257c0 100644
--- a/heron/tools/cli/src/python/main.py
+++ b/heron/tools/cli/src/python/main.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/opts.py b/heron/tools/cli/src/python/opts.py
index 160be97..be29bf2 100644
--- a/heron/tools/cli/src/python/opts.py
+++ b/heron/tools/cli/src/python/opts.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/rest.py b/heron/tools/cli/src/python/rest.py
index ec6b554..cc95a4f 100644
--- a/heron/tools/cli/src/python/rest.py
+++ b/heron/tools/cli/src/python/rest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/restart.py b/heron/tools/cli/src/python/restart.py
index ab8802e..9b731fa 100644
--- a/heron/tools/cli/src/python/restart.py
+++ b/heron/tools/cli/src/python/restart.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/result.py b/heron/tools/cli/src/python/result.py
index c8e47ff..e8b556d 100644
--- a/heron/tools/cli/src/python/result.py
+++ b/heron/tools/cli/src/python/result.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/submit.py b/heron/tools/cli/src/python/submit.py
index 5017486..57df7fb 100644
--- a/heron/tools/cli/src/python/submit.py
+++ b/heron/tools/cli/src/python/submit.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/update.py b/heron/tools/cli/src/python/update.py
index 6ac89ac..e499fb6 100644
--- a/heron/tools/cli/src/python/update.py
+++ b/heron/tools/cli/src/python/update.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/src/python/version.py b/heron/tools/cli/src/python/version.py
index 00c0957..260f2ae 100644
--- a/heron/tools/cli/src/python/version.py
+++ b/heron/tools/cli/src/python/version.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/tests/python/client_command_unittest.py b/heron/tools/cli/tests/python/client_command_unittest.py
index 891f31a..00f35a4 100644
--- a/heron/tools/cli/tests/python/client_command_unittest.py
+++ b/heron/tools/cli/tests/python/client_command_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/cli/tests/python/opts_unittest.py b/heron/tools/cli/tests/python/opts_unittest.py
index 49e128b..2f31ff6 100644
--- a/heron/tools/cli/tests/python/opts_unittest.py
+++ b/heron/tools/cli/tests/python/opts_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/common/src/python/access/fetch.py b/heron/tools/common/src/python/access/fetch.py
index bc8b8a3..19adf2b 100644
--- a/heron/tools/common/src/python/access/fetch.py
+++ b/heron/tools/common/src/python/access/fetch.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/common/src/python/access/heron_api.py b/heron/tools/common/src/python/access/heron_api.py
index 6e77e51..c5a5203 100644
--- a/heron/tools/common/src/python/access/heron_api.py
+++ b/heron/tools/common/src/python/access/heron_api.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/common/src/python/access/query.py b/heron/tools/common/src/python/access/query.py
index 3f42864..d126a7b 100644
--- a/heron/tools/common/src/python/access/query.py
+++ b/heron/tools/common/src/python/access/query.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/common/src/python/access/tracker_access.py b/heron/tools/common/src/python/access/tracker_access.py
index c0700f5..8b49b97 100644
--- a/heron/tools/common/src/python/access/tracker_access.py
+++ b/heron/tools/common/src/python/access/tracker_access.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/common/src/python/utils/classpath.py b/heron/tools/common/src/python/utils/classpath.py
index 2fc734d..a0293af 100644
--- a/heron/tools/common/src/python/utils/classpath.py
+++ b/heron/tools/common/src/python/utils/classpath.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/common/src/python/utils/config.py b/heron/tools/common/src/python/utils/config.py
index ad8d69a..42d395f 100644
--- a/heron/tools/common/src/python/utils/config.py
+++ b/heron/tools/common/src/python/utils/config.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/common/src/python/utils/heronparser.py b/heron/tools/common/src/python/utils/heronparser.py
index 29cb7a8..7a7acae 100755
--- a/heron/tools/common/src/python/utils/heronparser.py
+++ b/heron/tools/common/src/python/utils/heronparser.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/src/python/args.py b/heron/tools/explorer/src/python/args.py
index c312c35..2d5aca4 100644
--- a/heron/tools/explorer/src/python/args.py
+++ b/heron/tools/explorer/src/python/args.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/src/python/clusters.py b/heron/tools/explorer/src/python/clusters.py
index bdd208f..4efb25a 100644
--- a/heron/tools/explorer/src/python/clusters.py
+++ b/heron/tools/explorer/src/python/clusters.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/src/python/help.py b/heron/tools/explorer/src/python/help.py
index 6eaf116..37edee9 100644
--- a/heron/tools/explorer/src/python/help.py
+++ b/heron/tools/explorer/src/python/help.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/src/python/logicalplan.py b/heron/tools/explorer/src/python/logicalplan.py
index 3b6fa48..f6eb245 100644
--- a/heron/tools/explorer/src/python/logicalplan.py
+++ b/heron/tools/explorer/src/python/logicalplan.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/src/python/main.py b/heron/tools/explorer/src/python/main.py
index 49006fd..4147e04 100644
--- a/heron/tools/explorer/src/python/main.py
+++ b/heron/tools/explorer/src/python/main.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/src/python/opts.py b/heron/tools/explorer/src/python/opts.py
index 47c91f0..8b3e069 100644
--- a/heron/tools/explorer/src/python/opts.py
+++ b/heron/tools/explorer/src/python/opts.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/src/python/physicalplan.py b/heron/tools/explorer/src/python/physicalplan.py
index a577ee2..50ad7c3 100644
--- a/heron/tools/explorer/src/python/physicalplan.py
+++ b/heron/tools/explorer/src/python/physicalplan.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/src/python/topologies.py b/heron/tools/explorer/src/python/topologies.py
index 137f290..dab24a7 100644
--- a/heron/tools/explorer/src/python/topologies.py
+++ b/heron/tools/explorer/src/python/topologies.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/src/python/version.py b/heron/tools/explorer/src/python/version.py
index 84773f5..00f7e51 100644
--- a/heron/tools/explorer/src/python/version.py
+++ b/heron/tools/explorer/src/python/version.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/explorer/tests/python/explorer_unittest.py b/heron/tools/explorer/tests/python/explorer_unittest.py
index ab942fa..4070337 100644
--- a/heron/tools/explorer/tests/python/explorer_unittest.py
+++ b/heron/tools/explorer/tests/python/explorer_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/config.py b/heron/tools/tracker/src/python/config.py
index f19182b..089b03e 100644
--- a/heron/tools/tracker/src/python/config.py
+++ b/heron/tools/tracker/src/python/config.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/constants.py b/heron/tools/tracker/src/python/constants.py
index 2ae59ba..695a608 100644
--- a/heron/tools/tracker/src/python/constants.py
+++ b/heron/tools/tracker/src/python/constants.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/graph.py b/heron/tools/tracker/src/python/graph.py
index be94778..747fd5d 100644
--- a/heron/tools/tracker/src/python/graph.py
+++ b/heron/tools/tracker/src/python/graph.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/basehandler.py b/heron/tools/tracker/src/python/handlers/basehandler.py
index 49c2892..300fbf3 100644
--- a/heron/tools/tracker/src/python/handlers/basehandler.py
+++ b/heron/tools/tracker/src/python/handlers/basehandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/clustershandler.py b/heron/tools/tracker/src/python/handlers/clustershandler.py
index 73af255..d8aeede 100644
--- a/heron/tools/tracker/src/python/handlers/clustershandler.py
+++ b/heron/tools/tracker/src/python/handlers/clustershandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/containerfilehandler.py b/heron/tools/tracker/src/python/handlers/containerfilehandler.py
index 3132567..234ae20 100644
--- a/heron/tools/tracker/src/python/handlers/containerfilehandler.py
+++ b/heron/tools/tracker/src/python/handlers/containerfilehandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/defaulthandler.py b/heron/tools/tracker/src/python/handlers/defaulthandler.py
index a30443b..ff8093e 100644
--- a/heron/tools/tracker/src/python/handlers/defaulthandler.py
+++ b/heron/tools/tracker/src/python/handlers/defaulthandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/exceptionhandler.py b/heron/tools/tracker/src/python/handlers/exceptionhandler.py
index c43f285..2e67e79 100644
--- a/heron/tools/tracker/src/python/handlers/exceptionhandler.py
+++ b/heron/tools/tracker/src/python/handlers/exceptionhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/exceptionsummaryhandler.py b/heron/tools/tracker/src/python/handlers/exceptionsummaryhandler.py
index b613807..b943e5f 100644
--- a/heron/tools/tracker/src/python/handlers/exceptionsummaryhandler.py
+++ b/heron/tools/tracker/src/python/handlers/exceptionsummaryhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/executionstatehandler.py b/heron/tools/tracker/src/python/handlers/executionstatehandler.py
index b97c217..4d1793b 100644
--- a/heron/tools/tracker/src/python/handlers/executionstatehandler.py
+++ b/heron/tools/tracker/src/python/handlers/executionstatehandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/jmaphandler.py b/heron/tools/tracker/src/python/handlers/jmaphandler.py
index 6d41c4c..2e102cd 100644
--- a/heron/tools/tracker/src/python/handlers/jmaphandler.py
+++ b/heron/tools/tracker/src/python/handlers/jmaphandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/jstackhandler.py b/heron/tools/tracker/src/python/handlers/jstackhandler.py
index d5f4a64..48c583f 100644
--- a/heron/tools/tracker/src/python/handlers/jstackhandler.py
+++ b/heron/tools/tracker/src/python/handlers/jstackhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/logicalplanhandler.py b/heron/tools/tracker/src/python/handlers/logicalplanhandler.py
index 25c2acf..2da1cd2 100644
--- a/heron/tools/tracker/src/python/handlers/logicalplanhandler.py
+++ b/heron/tools/tracker/src/python/handlers/logicalplanhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/machineshandler.py b/heron/tools/tracker/src/python/handlers/machineshandler.py
index 6dfa838..bef23d9 100644
--- a/heron/tools/tracker/src/python/handlers/machineshandler.py
+++ b/heron/tools/tracker/src/python/handlers/machineshandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/mainhandler.py b/heron/tools/tracker/src/python/handlers/mainhandler.py
index 1b09e08..90e9347 100644
--- a/heron/tools/tracker/src/python/handlers/mainhandler.py
+++ b/heron/tools/tracker/src/python/handlers/mainhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/memoryhistogramhandler.py b/heron/tools/tracker/src/python/handlers/memoryhistogramhandler.py
index 3ac3293..10c32b9 100644
--- a/heron/tools/tracker/src/python/handlers/memoryhistogramhandler.py
+++ b/heron/tools/tracker/src/python/handlers/memoryhistogramhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/metadatahandler.py b/heron/tools/tracker/src/python/handlers/metadatahandler.py
index 820b51c..4605c63 100644
--- a/heron/tools/tracker/src/python/handlers/metadatahandler.py
+++ b/heron/tools/tracker/src/python/handlers/metadatahandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/metricshandler.py b/heron/tools/tracker/src/python/handlers/metricshandler.py
index 5f79f62..5047116 100644
--- a/heron/tools/tracker/src/python/handlers/metricshandler.py
+++ b/heron/tools/tracker/src/python/handlers/metricshandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/metricsqueryhandler.py b/heron/tools/tracker/src/python/handlers/metricsqueryhandler.py
index a0e367a..2ea9183 100644
--- a/heron/tools/tracker/src/python/handlers/metricsqueryhandler.py
+++ b/heron/tools/tracker/src/python/handlers/metricsqueryhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/metricstimelinehandler.py b/heron/tools/tracker/src/python/handlers/metricstimelinehandler.py
index 267734e..fb41385 100644
--- a/heron/tools/tracker/src/python/handlers/metricstimelinehandler.py
+++ b/heron/tools/tracker/src/python/handlers/metricstimelinehandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/packingplanhandler.py b/heron/tools/tracker/src/python/handlers/packingplanhandler.py
index 387b488..ced6eb1 100644
--- a/heron/tools/tracker/src/python/handlers/packingplanhandler.py
+++ b/heron/tools/tracker/src/python/handlers/packingplanhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/physicalplanhandler.py b/heron/tools/tracker/src/python/handlers/physicalplanhandler.py
index 2fd6223..ff98e5f 100644
--- a/heron/tools/tracker/src/python/handlers/physicalplanhandler.py
+++ b/heron/tools/tracker/src/python/handlers/physicalplanhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/pidhandler.py b/heron/tools/tracker/src/python/handlers/pidhandler.py
index 0eb5491..39d3e9b 100644
--- a/heron/tools/tracker/src/python/handlers/pidhandler.py
+++ b/heron/tools/tracker/src/python/handlers/pidhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/runtimestatehandler.py b/heron/tools/tracker/src/python/handlers/runtimestatehandler.py
index 44e2fc1..b776517 100644
--- a/heron/tools/tracker/src/python/handlers/runtimestatehandler.py
+++ b/heron/tools/tracker/src/python/handlers/runtimestatehandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/schedulerlocationhandler.py b/heron/tools/tracker/src/python/handlers/schedulerlocationhandler.py
index 670e1a6..502e922 100644
--- a/heron/tools/tracker/src/python/handlers/schedulerlocationhandler.py
+++ b/heron/tools/tracker/src/python/handlers/schedulerlocationhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/stateshandler.py b/heron/tools/tracker/src/python/handlers/stateshandler.py
index 2cf80cb..c2f398f 100644
--- a/heron/tools/tracker/src/python/handlers/stateshandler.py
+++ b/heron/tools/tracker/src/python/handlers/stateshandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/topologieshandler.py b/heron/tools/tracker/src/python/handlers/topologieshandler.py
index cbb9e1b..1beb567 100644
--- a/heron/tools/tracker/src/python/handlers/topologieshandler.py
+++ b/heron/tools/tracker/src/python/handlers/topologieshandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/topologyconfighandler.py b/heron/tools/tracker/src/python/handlers/topologyconfighandler.py
index 14cbf42..c16a969 100644
--- a/heron/tools/tracker/src/python/handlers/topologyconfighandler.py
+++ b/heron/tools/tracker/src/python/handlers/topologyconfighandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/handlers/topologyhandler.py b/heron/tools/tracker/src/python/handlers/topologyhandler.py
index 0a1b417..242cfc1 100644
--- a/heron/tools/tracker/src/python/handlers/topologyhandler.py
+++ b/heron/tools/tracker/src/python/handlers/topologyhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/javaobj.py b/heron/tools/tracker/src/python/javaobj.py
index ed962a0..d5978ba 100644
--- a/heron/tools/tracker/src/python/javaobj.py
+++ b/heron/tools/tracker/src/python/javaobj.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/main.py b/heron/tools/tracker/src/python/main.py
index 689d032..581894d 100644
--- a/heron/tools/tracker/src/python/main.py
+++ b/heron/tools/tracker/src/python/main.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/metricstimeline.py b/heron/tools/tracker/src/python/metricstimeline.py
index 29fcc2a..5cc0cf1 100644
--- a/heron/tools/tracker/src/python/metricstimeline.py
+++ b/heron/tools/tracker/src/python/metricstimeline.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/pyutils.py b/heron/tools/tracker/src/python/pyutils.py
index 71af4a9..8bdff1a 100644
--- a/heron/tools/tracker/src/python/pyutils.py
+++ b/heron/tools/tracker/src/python/pyutils.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/query.py b/heron/tools/tracker/src/python/query.py
index ceaa23a..67599a6 100644
--- a/heron/tools/tracker/src/python/query.py
+++ b/heron/tools/tracker/src/python/query.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/query_operators.py b/heron/tools/tracker/src/python/query_operators.py
index 216f1f5..dd348a7 100644
--- a/heron/tools/tracker/src/python/query_operators.py
+++ b/heron/tools/tracker/src/python/query_operators.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/topology.py b/heron/tools/tracker/src/python/topology.py
index ba7a197..2deef9e 100644
--- a/heron/tools/tracker/src/python/topology.py
+++ b/heron/tools/tracker/src/python/topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/tracker.py b/heron/tools/tracker/src/python/tracker.py
index 5cdbea4..e2d16fc 100644
--- a/heron/tools/tracker/src/python/tracker.py
+++ b/heron/tools/tracker/src/python/tracker.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/tracker/src/python/utils.py b/heron/tools/tracker/src/python/utils.py
index 1b61232..6e7bed0 100644
--- a/heron/tools/tracker/src/python/utils.py
+++ b/heron/tools/tracker/src/python/utils.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/args.py b/heron/tools/ui/src/python/args.py
index b5c0404..14f996d 100644
--- a/heron/tools/ui/src/python/args.py
+++ b/heron/tools/ui/src/python/args.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/consts.py b/heron/tools/ui/src/python/consts.py
index 63e7adf..7c643a7 100644
--- a/heron/tools/ui/src/python/consts.py
+++ b/heron/tools/ui/src/python/consts.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/handlers/api/metrics.py b/heron/tools/ui/src/python/handlers/api/metrics.py
index d70b1fd..770d270 100644
--- a/heron/tools/ui/src/python/handlers/api/metrics.py
+++ b/heron/tools/ui/src/python/handlers/api/metrics.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/handlers/api/topology.py b/heron/tools/ui/src/python/handlers/api/topology.py
index 6dd20db..f7c9100 100644
--- a/heron/tools/ui/src/python/handlers/api/topology.py
+++ b/heron/tools/ui/src/python/handlers/api/topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/handlers/base.py b/heron/tools/ui/src/python/handlers/base.py
index 059f3f6..1d0ee7d 100644
--- a/heron/tools/ui/src/python/handlers/base.py
+++ b/heron/tools/ui/src/python/handlers/base.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/handlers/common/consts.py b/heron/tools/ui/src/python/handlers/common/consts.py
index d033153..b9a3421 100644
--- a/heron/tools/ui/src/python/handlers/common/consts.py
+++ b/heron/tools/ui/src/python/handlers/common/consts.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/handlers/common/utils.py b/heron/tools/ui/src/python/handlers/common/utils.py
index ccb7b85..5b49236 100644
--- a/heron/tools/ui/src/python/handlers/common/utils.py
+++ b/heron/tools/ui/src/python/handlers/common/utils.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/handlers/mainhandler.py b/heron/tools/ui/src/python/handlers/mainhandler.py
index 59b5b5d..a3d82f2 100644
--- a/heron/tools/ui/src/python/handlers/mainhandler.py
+++ b/heron/tools/ui/src/python/handlers/mainhandler.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/handlers/notfound.py b/heron/tools/ui/src/python/handlers/notfound.py
index 57c62a0..57547dc 100644
--- a/heron/tools/ui/src/python/handlers/notfound.py
+++ b/heron/tools/ui/src/python/handlers/notfound.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/handlers/ranges.py b/heron/tools/ui/src/python/handlers/ranges.py
index eca3d42..be1f5ec 100644
--- a/heron/tools/ui/src/python/handlers/ranges.py
+++ b/heron/tools/ui/src/python/handlers/ranges.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/handlers/topology.py b/heron/tools/ui/src/python/handlers/topology.py
index 5ce4c0f..51985fe 100644
--- a/heron/tools/ui/src/python/handlers/topology.py
+++ b/heron/tools/ui/src/python/handlers/topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heron/tools/ui/src/python/main.py b/heron/tools/ui/src/python/main.py
index 3ca4947..ee96365 100644
--- a/heron/tools/ui/src/python/main.py
+++ b/heron/tools/ui/src/python/main.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/api_constants.py b/heronpy/api/api_constants.py
index d4cbf65..b9e16e1 100644
--- a/heronpy/api/api_constants.py
+++ b/heronpy/api/api_constants.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/bolt/window_bolt.py b/heronpy/api/bolt/window_bolt.py
index 892994c..901e08e 100644
--- a/heronpy/api/bolt/window_bolt.py
+++ b/heronpy/api/bolt/window_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/component/component_spec.py b/heronpy/api/component/component_spec.py
index dc00aad..bf134d7 100644
--- a/heronpy/api/component/component_spec.py
+++ b/heronpy/api/component/component_spec.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/custom_grouping.py b/heronpy/api/custom_grouping.py
index 4654c90..6c72a30 100644
--- a/heronpy/api/custom_grouping.py
+++ b/heronpy/api/custom_grouping.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/global_metrics.py b/heronpy/api/global_metrics.py
index a9bf599..cf052b1 100644
--- a/heronpy/api/global_metrics.py
+++ b/heronpy/api/global_metrics.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/metrics.py b/heronpy/api/metrics.py
index 848d972..b944d58 100644
--- a/heronpy/api/metrics.py
+++ b/heronpy/api/metrics.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/serializer.py b/heronpy/api/serializer.py
index 4441c43..6a922f6 100644
--- a/heronpy/api/serializer.py
+++ b/heronpy/api/serializer.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/spout/spout.py b/heronpy/api/spout/spout.py
index 504f082..81ff5d7 100644
--- a/heronpy/api/spout/spout.py
+++ b/heronpy/api/spout/spout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/state/state.py b/heronpy/api/state/state.py
index 43a9d28..7b15481 100644
--- a/heronpy/api/state/state.py
+++ b/heronpy/api/state/state.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/state/stateful_component.py b/heronpy/api/state/stateful_component.py
index 7df5565..33f32af 100644
--- a/heronpy/api/state/stateful_component.py
+++ b/heronpy/api/state/stateful_component.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/task_hook.py b/heronpy/api/task_hook.py
index 91a863c..c95a1d8 100644
--- a/heronpy/api/task_hook.py
+++ b/heronpy/api/task_hook.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/tests/python/component_unittest.py b/heronpy/api/tests/python/component_unittest.py
index f8b5f46..9da4a8d 100644
--- a/heronpy/api/tests/python/component_unittest.py
+++ b/heronpy/api/tests/python/component_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/tests/python/metrics_unittest.py b/heronpy/api/tests/python/metrics_unittest.py
index 23f35a9..063651a 100644
--- a/heronpy/api/tests/python/metrics_unittest.py
+++ b/heronpy/api/tests/python/metrics_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/tests/python/serializer_unittest.py b/heronpy/api/tests/python/serializer_unittest.py
index 8b8bf8b..65db24a 100644
--- a/heronpy/api/tests/python/serializer_unittest.py
+++ b/heronpy/api/tests/python/serializer_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/tests/python/stream_unittest.py b/heronpy/api/tests/python/stream_unittest.py
index 013c1f0..3869bcb 100644
--- a/heronpy/api/tests/python/stream_unittest.py
+++ b/heronpy/api/tests/python/stream_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/tests/python/topology_unittest.py b/heronpy/api/tests/python/topology_unittest.py
index bdd172b..80e27aa 100644
--- a/heronpy/api/tests/python/topology_unittest.py
+++ b/heronpy/api/tests/python/topology_unittest.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/topology.py b/heronpy/api/topology.py
index 5de7057..c62a6bd 100644
--- a/heronpy/api/topology.py
+++ b/heronpy/api/topology.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/topology_context.py b/heronpy/api/topology_context.py
index 1a05459..e3bb263 100644
--- a/heronpy/api/topology_context.py
+++ b/heronpy/api/topology_context.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/api/tuple.py b/heronpy/api/tuple.py
index e1d07d2..e21ff5d 100644
--- a/heronpy/api/tuple.py
+++ b/heronpy/api/tuple.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/connectors/mock/arraylooper.py b/heronpy/connectors/mock/arraylooper.py
index b225696..3824a2e 100644
--- a/heronpy/connectors/mock/arraylooper.py
+++ b/heronpy/connectors/mock/arraylooper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/connectors/pulsar/pulsarspout.py b/heronpy/connectors/pulsar/pulsarspout.py
index e81bfb6..83bc055 100644
--- a/heronpy/connectors/pulsar/pulsarspout.py
+++ b/heronpy/connectors/pulsar/pulsarspout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/connectors/pulsar/pulsarstreamlet.py b/heronpy/connectors/pulsar/pulsarstreamlet.py
index 2b7665d..319692f 100644
--- a/heronpy/connectors/pulsar/pulsarstreamlet.py
+++ b/heronpy/connectors/pulsar/pulsarstreamlet.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/connectors/textfiles/textfilesgenerator.py b/heronpy/connectors/textfiles/textfilesgenerator.py
index 129e046..832ada6 100644
--- a/heronpy/connectors/textfiles/textfilesgenerator.py
+++ b/heronpy/connectors/textfiles/textfilesgenerator.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/builder.py b/heronpy/streamlet/builder.py
index 06a27e3..aa2bd22 100644
--- a/heronpy/streamlet/builder.py
+++ b/heronpy/streamlet/builder.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/config.py b/heronpy/streamlet/config.py
index bbf10fd..d141ccc 100644
--- a/heronpy/streamlet/config.py
+++ b/heronpy/streamlet/config.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/context.py b/heronpy/streamlet/context.py
index bcfbae2..f1fe62e 100644
--- a/heronpy/streamlet/context.py
+++ b/heronpy/streamlet/context.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/consumebolt.py b/heronpy/streamlet/impl/consumebolt.py
index 3e84d23..ae63e56 100644
--- a/heronpy/streamlet/impl/consumebolt.py
+++ b/heronpy/streamlet/impl/consumebolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/contextimpl.py b/heronpy/streamlet/impl/contextimpl.py
index d74542d..d944ec7 100644
--- a/heronpy/streamlet/impl/contextimpl.py
+++ b/heronpy/streamlet/impl/contextimpl.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/filterbolt.py b/heronpy/streamlet/impl/filterbolt.py
index 30ffd8a..820a56e 100644
--- a/heronpy/streamlet/impl/filterbolt.py
+++ b/heronpy/streamlet/impl/filterbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/flatmapbolt.py b/heronpy/streamlet/impl/flatmapbolt.py
index 3af381d..19cd07b 100644
--- a/heronpy/streamlet/impl/flatmapbolt.py
+++ b/heronpy/streamlet/impl/flatmapbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/generatorspout.py b/heronpy/streamlet/impl/generatorspout.py
index 265b71f..4b250ce 100644
--- a/heronpy/streamlet/impl/generatorspout.py
+++ b/heronpy/streamlet/impl/generatorspout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/joinbolt.py b/heronpy/streamlet/impl/joinbolt.py
index ba70856..199e33b 100644
--- a/heronpy/streamlet/impl/joinbolt.py
+++ b/heronpy/streamlet/impl/joinbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/logbolt.py b/heronpy/streamlet/impl/logbolt.py
index c18ada4..1740b01 100644
--- a/heronpy/streamlet/impl/logbolt.py
+++ b/heronpy/streamlet/impl/logbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/mapbolt.py b/heronpy/streamlet/impl/mapbolt.py
index 4445852..34d82bf 100644
--- a/heronpy/streamlet/impl/mapbolt.py
+++ b/heronpy/streamlet/impl/mapbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/reducebykeyandwindowbolt.py b/heronpy/streamlet/impl/reducebykeyandwindowbolt.py
index 977ece1..7cd4a93 100644
--- a/heronpy/streamlet/impl/reducebykeyandwindowbolt.py
+++ b/heronpy/streamlet/impl/reducebykeyandwindowbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/reducebywindowbolt.py b/heronpy/streamlet/impl/reducebywindowbolt.py
index 4a76cd2..6b09ef7 100644
--- a/heronpy/streamlet/impl/reducebywindowbolt.py
+++ b/heronpy/streamlet/impl/reducebywindowbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/repartitionbolt.py b/heronpy/streamlet/impl/repartitionbolt.py
index 78fc49e..c4a44a1 100644
--- a/heronpy/streamlet/impl/repartitionbolt.py
+++ b/heronpy/streamlet/impl/repartitionbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/streamletboltbase.py b/heronpy/streamlet/impl/streamletboltbase.py
index b4fbd7e..0d6af23 100644
--- a/heronpy/streamlet/impl/streamletboltbase.py
+++ b/heronpy/streamlet/impl/streamletboltbase.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/streamletspoutbase.py b/heronpy/streamlet/impl/streamletspoutbase.py
index 260957c..46b6944 100644
--- a/heronpy/streamlet/impl/streamletspoutbase.py
+++ b/heronpy/streamlet/impl/streamletspoutbase.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/supplierspout.py b/heronpy/streamlet/impl/supplierspout.py
index 46e1833..af656c3 100644
--- a/heronpy/streamlet/impl/supplierspout.py
+++ b/heronpy/streamlet/impl/supplierspout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/transformbolt.py b/heronpy/streamlet/impl/transformbolt.py
index a0906a9..4bf9fee 100644
--- a/heronpy/streamlet/impl/transformbolt.py
+++ b/heronpy/streamlet/impl/transformbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/impl/unionbolt.py b/heronpy/streamlet/impl/unionbolt.py
index fb9b3c5..76ed957 100644
--- a/heronpy/streamlet/impl/unionbolt.py
+++ b/heronpy/streamlet/impl/unionbolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/keyedwindow.py b/heronpy/streamlet/keyedwindow.py
index 51c84f1..b5255dc 100644
--- a/heronpy/streamlet/keyedwindow.py
+++ b/heronpy/streamlet/keyedwindow.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/resources.py b/heronpy/streamlet/resources.py
index e4be526..75782c1 100644
--- a/heronpy/streamlet/resources.py
+++ b/heronpy/streamlet/resources.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/runner.py b/heronpy/streamlet/runner.py
index a955b42..2d3d73d 100644
--- a/heronpy/streamlet/runner.py
+++ b/heronpy/streamlet/runner.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/streamlet.py b/heronpy/streamlet/streamlet.py
index 4fd83f6..cad88dc 100644
--- a/heronpy/streamlet/streamlet.py
+++ b/heronpy/streamlet/streamlet.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/window.py b/heronpy/streamlet/window.py
index 4113bc4..04b895d 100644
--- a/heronpy/streamlet/window.py
+++ b/heronpy/streamlet/window.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/heronpy/streamlet/windowconfig.py b/heronpy/streamlet/windowconfig.py
index f0ce7d8..1fa0fb5 100644
--- a/heronpy/streamlet/windowconfig.py
+++ b/heronpy/streamlet/windowconfig.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/common/status.py b/integration_test/src/python/common/status.py
index 876b3e8..d2f69e4 100644
--- a/integration_test/src/python/common/status.py
+++ b/integration_test/src/python/common/status.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/common/bolt/count_aggregator_bolt.py b/integration_test/src/python/integration_test/common/bolt/count_aggregator_bolt.py
index 6bfe7c3..d18ec24 100644
--- a/integration_test/src/python/integration_test/common/bolt/count_aggregator_bolt.py
+++ b/integration_test/src/python/integration_test/common/bolt/count_aggregator_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/common/bolt/double_tuples_bolt.py b/integration_test/src/python/integration_test/common/bolt/double_tuples_bolt.py
index 68341b4..561db78 100644
--- a/integration_test/src/python/integration_test/common/bolt/double_tuples_bolt.py
+++ b/integration_test/src/python/integration_test/common/bolt/double_tuples_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/common/bolt/identity_bolt.py b/integration_test/src/python/integration_test/common/bolt/identity_bolt.py
index 1680ce3..4740f38 100644
--- a/integration_test/src/python/integration_test/common/bolt/identity_bolt.py
+++ b/integration_test/src/python/integration_test/common/bolt/identity_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/common/bolt/word_count_bolt.py b/integration_test/src/python/integration_test/common/bolt/word_count_bolt.py
index 823aac3..6824309 100644
--- a/integration_test/src/python/integration_test/common/bolt/word_count_bolt.py
+++ b/integration_test/src/python/integration_test/common/bolt/word_count_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/common/spout/ab_spout.py b/integration_test/src/python/integration_test/common/spout/ab_spout.py
index 58d1c59..828420c 100644
--- a/integration_test/src/python/integration_test/common/spout/ab_spout.py
+++ b/integration_test/src/python/integration_test/common/spout/ab_spout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/core/aggregator_bolt.py b/integration_test/src/python/integration_test/core/aggregator_bolt.py
index d2047c5..4fd6cf1 100644
--- a/integration_test/src/python/integration_test/core/aggregator_bolt.py
+++ b/integration_test/src/python/integration_test/core/aggregator_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/core/batch_bolt.py b/integration_test/src/python/integration_test/core/batch_bolt.py
index ecaa4c6..d35f09e 100644
--- a/integration_test/src/python/integration_test/core/batch_bolt.py
+++ b/integration_test/src/python/integration_test/core/batch_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/core/constants.py b/integration_test/src/python/integration_test/core/constants.py
index 0530928..5b72cd3 100644
--- a/integration_test/src/python/integration_test/core/constants.py
+++ b/integration_test/src/python/integration_test/core/constants.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/core/integration_test_bolt.py b/integration_test/src/python/integration_test/core/integration_test_bolt.py
index ea51c4c..cfb4d7d 100644
--- a/integration_test/src/python/integration_test/core/integration_test_bolt.py
+++ b/integration_test/src/python/integration_test/core/integration_test_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/core/integration_test_spout.py b/integration_test/src/python/integration_test/core/integration_test_spout.py
index 4edd807..7c7ddcc 100644
--- a/integration_test/src/python/integration_test/core/integration_test_spout.py
+++ b/integration_test/src/python/integration_test/core/integration_test_spout.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/core/terminal_bolt.py b/integration_test/src/python/integration_test/core/terminal_bolt.py
index 6a868bb..c4f6afa 100644
--- a/integration_test/src/python/integration_test/core/terminal_bolt.py
+++ b/integration_test/src/python/integration_test/core/terminal_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/core/test_runner.py b/integration_test/src/python/integration_test/core/test_runner.py
index eb5285f..a4b6a10 100644
--- a/integration_test/src/python/integration_test/core/test_runner.py
+++ b/integration_test/src/python/integration_test/core/test_runner.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/core/test_topology_builder.py b/integration_test/src/python/integration_test/core/test_topology_builder.py
index 6881644..d64a874 100644
--- a/integration_test/src/python/integration_test/core/test_topology_builder.py
+++ b/integration_test/src/python/integration_test/core/test_topology_builder.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/all_grouping/all_grouping.py b/integration_test/src/python/integration_test/topology/all_grouping/all_grouping.py
index 6c71b95..8febd7b 100644
--- a/integration_test/src/python/integration_test/topology/all_grouping/all_grouping.py
+++ b/integration_test/src/python/integration_test/topology/all_grouping/all_grouping.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/basic_one_task/basic_one_task.py b/integration_test/src/python/integration_test/topology/basic_one_task/basic_one_task.py
index 08e232c..da1edcb 100644
--- a/integration_test/src/python/integration_test/topology/basic_one_task/basic_one_task.py
+++ b/integration_test/src/python/integration_test/topology/basic_one_task/basic_one_task.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/bolt_double_emit_tuples/bolt_double_emit_tuples.py b/integration_test/src/python/integration_test/topology/bolt_double_emit_tuples/bolt_double_emit_tuples.py
index fa817e7..c4ddee1 100644
--- a/integration_test/src/python/integration_test/topology/bolt_double_emit_tuples/bolt_double_emit_tuples.py
+++ b/integration_test/src/python/integration_test/topology/bolt_double_emit_tuples/bolt_double_emit_tuples.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/fields_grouping/fields_grouping.py b/integration_test/src/python/integration_test/topology/fields_grouping/fields_grouping.py
index 5aa00f4..8de7167 100644
--- a/integration_test/src/python/integration_test/topology/fields_grouping/fields_grouping.py
+++ b/integration_test/src/python/integration_test/topology/fields_grouping/fields_grouping.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/global_grouping/global_grouping.py b/integration_test/src/python/integration_test/topology/global_grouping/global_grouping.py
index 7a62424..898beb6 100644
--- a/integration_test/src/python/integration_test/topology/global_grouping/global_grouping.py
+++ b/integration_test/src/python/integration_test/topology/global_grouping/global_grouping.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/multi_spouts_multi_tasks/multi_spouts_multi_tasks.py b/integration_test/src/python/integration_test/topology/multi_spouts_multi_tasks/multi_spouts_multi_tasks.py
index 2d56ade..52af55b 100644
--- a/integration_test/src/python/integration_test/topology/multi_spouts_multi_tasks/multi_spouts_multi_tasks.py
+++ b/integration_test/src/python/integration_test/topology/multi_spouts_multi_tasks/multi_spouts_multi_tasks.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/none_grouping/none_grouping.py b/integration_test/src/python/integration_test/topology/none_grouping/none_grouping.py
index 66dcd36..c696094 100644
--- a/integration_test/src/python/integration_test/topology/none_grouping/none_grouping.py
+++ b/integration_test/src/python/integration_test/topology/none_grouping/none_grouping.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/one_bolt_multi_tasks/one_bolt_multi_tasks.py b/integration_test/src/python/integration_test/topology/one_bolt_multi_tasks/one_bolt_multi_tasks.py
index c94b622..b2d808c 100644
--- a/integration_test/src/python/integration_test/topology/one_bolt_multi_tasks/one_bolt_multi_tasks.py
+++ b/integration_test/src/python/integration_test/topology/one_bolt_multi_tasks/one_bolt_multi_tasks.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/one_spout_bolt_multi_tasks/one_spout_bolt_multi_tasks.py b/integration_test/src/python/integration_test/topology/one_spout_bolt_multi_tasks/one_spout_bolt_multi_tasks.py
index 6b0ce64..f0716cb 100644
--- a/integration_test/src/python/integration_test/topology/one_spout_bolt_multi_tasks/one_spout_bolt_multi_tasks.py
+++ b/integration_test/src/python/integration_test/topology/one_spout_bolt_multi_tasks/one_spout_bolt_multi_tasks.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/one_spout_multi_tasks/one_spout_multi_tasks.py b/integration_test/src/python/integration_test/topology/one_spout_multi_tasks/one_spout_multi_tasks.py
index 0a55597..310f15e 100644
--- a/integration_test/src/python/integration_test/topology/one_spout_multi_tasks/one_spout_multi_tasks.py
+++ b/integration_test/src/python/integration_test/topology/one_spout_multi_tasks/one_spout_multi_tasks.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/one_spout_two_bolts/one_spout_two_bolts.py b/integration_test/src/python/integration_test/topology/one_spout_two_bolts/one_spout_two_bolts.py
index 83ba5ac..adf9b5f 100644
--- a/integration_test/src/python/integration_test/topology/one_spout_two_bolts/one_spout_two_bolts.py
+++ b/integration_test/src/python/integration_test/topology/one_spout_two_bolts/one_spout_two_bolts.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/shuffle_grouping/shuffle_grouping.py b/integration_test/src/python/integration_test/topology/shuffle_grouping/shuffle_grouping.py
index dafec6b..5bd2bbd 100644
--- a/integration_test/src/python/integration_test/topology/shuffle_grouping/shuffle_grouping.py
+++ b/integration_test/src/python/integration_test/topology/shuffle_grouping/shuffle_grouping.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/streamlet/word_count_streamlet.py b/integration_test/src/python/integration_test/topology/streamlet/word_count_streamlet.py
index 704bac3..7cdc51f 100644
--- a/integration_test/src/python/integration_test/topology/streamlet/word_count_streamlet.py
+++ b/integration_test/src/python/integration_test/topology/streamlet/word_count_streamlet.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/integration_test/topology/test_topology_main.py b/integration_test/src/python/integration_test/topology/test_topology_main.py
index a83ca59..e9b41c1 100644
--- a/integration_test/src/python/integration_test/topology/test_topology_main.py
+++ b/integration_test/src/python/integration_test/topology/test_topology_main.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/local_test_runner/main.py b/integration_test/src/python/local_test_runner/main.py
index cf45651..37e59f4 100644
--- a/integration_test/src/python/local_test_runner/main.py
+++ b/integration_test/src/python/local_test_runner/main.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/local_test_runner/test_kill_bolt.py b/integration_test/src/python/local_test_runner/test_kill_bolt.py
index 9248961..01945e2 100644
--- a/integration_test/src/python/local_test_runner/test_kill_bolt.py
+++ b/integration_test/src/python/local_test_runner/test_kill_bolt.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/local_test_runner/test_kill_metricsmgr.py b/integration_test/src/python/local_test_runner/test_kill_metricsmgr.py
index e8cc929..dbff9c1 100644
--- a/integration_test/src/python/local_test_runner/test_kill_metricsmgr.py
+++ b/integration_test/src/python/local_test_runner/test_kill_metricsmgr.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/local_test_runner/test_kill_stmgr.py b/integration_test/src/python/local_test_runner/test_kill_stmgr.py
index 0b34e63..bdb28f4 100644
--- a/integration_test/src/python/local_test_runner/test_kill_stmgr.py
+++ b/integration_test/src/python/local_test_runner/test_kill_stmgr.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/local_test_runner/test_kill_stmgr_metricsmgr.py b/integration_test/src/python/local_test_runner/test_kill_stmgr_metricsmgr.py
index ac54d35..5ae9f6a 100644
--- a/integration_test/src/python/local_test_runner/test_kill_stmgr_metricsmgr.py
+++ b/integration_test/src/python/local_test_runner/test_kill_stmgr_metricsmgr.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/local_test_runner/test_kill_tmaster.py b/integration_test/src/python/local_test_runner/test_kill_tmaster.py
index 573519b..ea7f6c6 100644
--- a/integration_test/src/python/local_test_runner/test_kill_tmaster.py
+++ b/integration_test/src/python/local_test_runner/test_kill_tmaster.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/local_test_runner/test_scale_up.py b/integration_test/src/python/local_test_runner/test_scale_up.py
index 330f62e..93d3fae 100644
--- a/integration_test/src/python/local_test_runner/test_scale_up.py
+++ b/integration_test/src/python/local_test_runner/test_scale_up.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/integration_test/src/python/local_test_runner/test_template.py b/integration_test/src/python/local_test_runner/test_template.py
index e8ee82e..3ad5fa5 100644
--- a/integration_test/src/python/local_test_runner/test_template.py
+++ b/integration_test/src/python/local_test_runner/test_template.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 
 #  Licensed to the Apache Software Foundation (ASF) under one

diff --git a/scripts/shutils/save-logs.py b/scripts/shutils/save-logs.py
index 5ac5b67..c378936 100755
--- a/scripts/shutils/save-logs.py
+++ b/scripts/shutils/save-logs.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # Licensed to the Apache Software Foundation (ASF) under one
 # or more contributor license agreements.  See the NOTICE file
 # distributed with this work for additional information

diff --git a/third_party/python/cpplint/cpplint.py b/third_party/python/cpplint/cpplint.py
index 4e196e8..c30a3bc 100755
--- a/third_party/python/cpplint/cpplint.py
+++ b/third_party/python/cpplint/cpplint.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 #
 # Copyright (c) 2009 Google Inc. All rights reserved.
 #

diff --git a/tools/bazel.rc b/tools/bazel.rc
index 6c62547..0e35097 100644
--- a/tools/bazel.rc
+++ b/tools/bazel.rc

@@ -17,7 +17,7 @@
 
 
 build --genrule_strategy=standalone
-build --host_force_python=PY3
+build --host_force_python=PY2
 build --ignore_unsupported_sandboxing
 build --spawn_strategy=standalone
 build --workspace_status_command scripts/release/status.sh

diff --git a/tools/rules/pex/wrapper/pex_wrapper.py b/tools/rules/pex/wrapper/pex_wrapper.py
index 0a54d33..d93bf98 100644
--- a/tools/rules/pex/wrapper/pex_wrapper.py
+++ b/tools/rules/pex/wrapper/pex_wrapper.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 # Copyright 2014 Google Inc. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
commit	6846f709b8631827133e8ee67ebb23faa053aec8	[log] [tgz]
author	Nicholas Nezis <nicholas.nezis@gmail.com>	Thu Mar 05 00:18:10 2020 -0500
committer	GitHub <noreply@github.com>	Thu Mar 05 00:18:10 2020 -0500
tree	beb36f0b7d4ff91ea5ca34566ac5a0ffe2e866b4
parent	ee1c44aefa8a5a5dd4e1effcd736014af70ec3b6 [diff]