| # 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 |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| # flake8: noqa |
| |
| from __future__ import absolute_import |
| |
| import itertools |
| |
| import numpy as np |
| |
| import sys |
| import six |
| from six import BytesIO, StringIO, string_types as py_string |
| import socket |
| |
| |
| PY26 = sys.version_info[:2] == (2, 6) |
| PY2 = sys.version_info[0] == 2 |
| |
| |
| if PY26: |
| import unittest2 as unittest |
| else: |
| import unittest |
| |
| |
| if PY2: |
| import cPickle as builtin_pickle |
| |
| try: |
| from cdecimal import Decimal |
| except ImportError: |
| from decimal import Decimal |
| |
| from collections import Iterable, Mapping, Sequence |
| |
| unicode_type = unicode |
| file_type = file |
| lzip = zip |
| zip = itertools.izip |
| zip_longest = itertools.izip_longest |
| |
| def dict_values(x): |
| return x.values() |
| |
| range = xrange |
| long = long |
| |
| def guid(): |
| from uuid import uuid4 |
| return uuid4().get_hex() |
| |
| def u(s): |
| return unicode(s, "unicode_escape") |
| |
| def tobytes(o): |
| if isinstance(o, unicode): |
| return o.encode('utf8') |
| else: |
| return o |
| |
| def frombytes(o): |
| return o |
| |
| def unichar(s): |
| return unichr(s) |
| else: |
| try: |
| import pickle5 as builtin_pickle |
| except ImportError: |
| import pickle as builtin_pickle |
| |
| from collections.abc import Iterable, Mapping, Sequence |
| |
| unicode_type = str |
| file_type = None |
| def lzip(*x): |
| return list(zip(*x)) |
| long = int |
| zip = zip |
| zip_longest = itertools.zip_longest |
| def dict_values(x): |
| return list(x.values()) |
| from decimal import Decimal |
| range = range |
| |
| def guid(): |
| from uuid import uuid4 |
| return uuid4().hex |
| |
| def u(s): |
| return s |
| |
| def tobytes(o): |
| if isinstance(o, str): |
| return o.encode('utf8') |
| else: |
| return o |
| |
| def frombytes(o): |
| return o.decode('utf8') |
| |
| def unichar(s): |
| return chr(s) |
| |
| |
| if sys.version_info >= (3, 7): |
| # Starting with Python 3.7, dicts are guaranteed to be insertion-ordered. |
| ordered_dict = dict |
| else: |
| import collections |
| ordered_dict = collections.OrderedDict |
| |
| |
| try: |
| import cloudpickle as pickle |
| except ImportError: |
| pickle = builtin_pickle |
| |
| def encode_file_path(path): |
| import os |
| if isinstance(path, unicode_type): |
| # POSIX systems can handle utf-8. UTF8 is converted to utf16-le in |
| # libarrow |
| encoded_path = path.encode('utf-8') |
| else: |
| encoded_path = path |
| |
| # Windows file system requires utf-16le for file names; Arrow C++ libraries |
| # will convert utf8 to utf16 |
| return encoded_path |
| |
| |
| integer_types = six.integer_types + (np.integer,) |
| |
| |
| def get_socket_from_fd(fileno, family, type): |
| if PY2: |
| socket_obj = socket.fromfd(fileno, family, type) |
| return socket.socket(family, type, _sock=socket_obj) |
| else: |
| return socket.socket(fileno=fileno, family=family, type=type) |
| |
| |
| __all__ = [] |