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python 3 collections framework

Project Description


pycol is a collections framework for python 3+ usable in a fluent way. Inspired by the eclipse-collections project. All collections methods are using generators for lazy evaluation.


from pycol.factory import iterable, select, each, map
import json

# 1. reject all elements lower than 20 == [88, 22]
# 2. divide each of them by 2 == [44, 11]
# 3. evaluate if they all are greater than 10 == True (final result)
iterable([1, 88, 12, 10, 22]).reject(, 20).map(lambda el: el / 2).all_satisfy(, 10)

# 1. select all int greater than 10 == [108, 22]
# 2. print them
select([108, 1, 10, 22, 'foo', -15], lambda el: isinstance(el, int) and el > 10).each(print)

# print indented json output of each dictionary in the list:
map([{'a': 1, 'b': {'b1': 10, 'b2': 11}}, {'foo': 'bar'}], json.dumps, indent=2).each(print)


See test/

To run the tests go to the project parent directory then run python -m pycol.test.test_collections

Coming soon…

  • Implementation for dictionaries
  • Add more functions like group_by, …
  • Leverage async generator
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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pycol-1.0.2-py3-none-any.whl (5.3 kB) Copy SHA256 Checksum SHA256 py3 Wheel Apr 21, 2017
pycol-1.0.2.tar.gz (4.9 kB) Copy SHA256 Checksum SHA256 Source Apr 21, 2017

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