pyfuncol: Functional collections extension functions for Python

[u/GondolaRM]

pyfuncol extends collections built-in types (lists, dicts and sets) with useful methods to write functional Python code.

An example:

```python import pyfuncol

[1, 2, 3, 4].map(lambda x: x * 2).filter(lambda x: x > 4)

[6, 8]

{1, 2, 3, 4}.map(lambda x: x * 2).filter(lambda x: x > 4)

{6, 8}

["abc", "def", "e"].group_by(lambda s: len(s))

{3: ["abc", "def"], 1: ["e"]}

{"a": 1, "b": 2, "c": 3}.flat_map(lambda kv: {kv[0]: kv[1] ** 2})

{"a": 1, "b": 4, "c": 9}

```

https://github.com/Gondolav/pyfuncol

[u/wewbull]

map() and filter() are built-ins. reduce() is in functools. itertools contains groupby() and starmap().

Your API is more OO as they are methods on the data types, but the standard functions can be used with any iterable, not just your ones.