effectivepython/example_code/item_40_example_18.py at master · AISTLAB/effectivepython · GitHub

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#!/usr/bin/env python2.7

# Licensed 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.

# Preamble to mimick book environment

import logging

from pprint import pprint

from sys import stdout as STDOUT

# Example 18

def delegated():

yield 1

yield 2

def composed():

yield 'A'

for value in delegated(): # yield from in Python 3

yield value

yield 'B'

print list(composed())

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