# coding=utf-8
#
# 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.
#

from __future__ import absolute_import
from __future__ import print_function


def kvswap(test=None):
  # [START kvswap]
  import apache_beam as beam

  with beam.Pipeline() as pipeline:
    plants = (
        pipeline
        | 'Garden plants' >> beam.Create([
            ('🍓', 'Strawberry'),
            ('🥕', 'Carrot'),
            ('🍆', 'Eggplant'),
            ('🍅', 'Tomato'),
            ('🥔', 'Potato'),
        ])
        | 'Key-Value swap' >> beam.KvSwap()
        | beam.Map(print)
    )
    # [END kvswap]
    if test:
      test(plants)