f-it 0.2.1

Iterator class for functional programming

f_it: Functional Iterator

Iterator class for functional programming in python

• Free software: MIT license

• Documentation: https://f_it.readthedocs.io.

Features

• A single wrapper class exposing chain-able methods for lazily transforming iterators

• Wraps functions from functools, itertools, and some extras

• Optionally has a length, which is calculated for subsequent operations if possible

Note that this package is for convenience/ interface comfort purposes and does not provide the guarantees of a true functional language.

Install

pip install f_it

Usage

from f_it import FIt

it = FIt(range(10))
transformed = it.map(  # cube elements
    lambda x: x**3
).filter(  # drop even elements
    lambda x: x % 2
).cycle(  # repeat the whole iterator 3 times
    3
).islice(  # take some elements from the middle
    5, 10
).chain(  # add 0-4 to the end
    range(5)
).chunk(  # separate into 2-length chunks
    2
)

# nothing has been evaluated yet!

# evaluate operations, reading into a list
# if tqdm is available, show progress bar
as_list = transformed.progress().to(list)

History

0.1.0 (2019-08-21)

• First release on PyPI.