More routines for operating on iterables, beyond itertools

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  • License Expression: MIT
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  • Author: Erik Rose
  • Tags itertools , iterator , iteration , filter , peek , peekable , chunk , chunked
  • Requires: Python >=3.9
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Project description

https://readthedocs.org/projects/more-itertools/badge/?version=latest

Python’s itertools library is a gem - you can compose elegant solutions for a variety of problems with the functions it provides. In more-itertools we collect additional building blocks, recipes, and routines for working with Python iterables.

Grouping

chunked, ichunked, chunked_even, sliced, constrained_batches, distribute, divide, split_at, split_before, split_after, split_into, split_when, bucket, unzip, batched, grouper, partition, transpose

Lookahead and lookback

spy, peekable, seekable

Windowing

windowed, substrings, substrings_indexes, stagger, windowed_complete, pairwise, triplewise, sliding_window, subslices

Augmenting

count_cycle, intersperse, padded, repeat_each, mark_ends, repeat_last, adjacent, groupby_transform, pad_none, ncycles

Combining

collapse, sort_together, interleave, interleave_longest, interleave_evenly, interleave_randomly, zip_offset, zip_equal, zip_broadcast, flatten, roundrobin, prepend, value_chain, partial_product

Summarizing

ilen, unique_to_each, sample, consecutive_groups, run_length, map_reduce, join_mappings, exactly_n, is_sorted, all_equal, all_unique, argmin, argmax, minmax, first_true, quantify, iequals

Selecting

islice_extended, first, last, one, only, strictly_n, strip, lstrip, rstrip, filter_except, map_except, filter_map, iter_suppress, nth_or_last, extract, unique_in_window, before_and_after, nth, take, tail, unique_everseen, unique_justseen, unique, duplicates_everseen, duplicates_justseen, classify_unique, longest_common_prefix, takewhile_inclusive

Math

dft, idft, convolve, dotproduct, matmul, polynomial_from_roots, polynomial_derivative, polynomial_eval, sum_of_squares, running_median, totient

Integer math

factor, is_prime, multinomial, nth_prime, sieve

Combinatorics

circular_shifts, derangements, gray_product, outer_product, partitions, set_partitions, powerset, powerset_of_sets

distinct_combinations, distinct_permutations

combination_index, combination_with_replacement_index, permutation_index, product_index

nth_combination, nth_combination_with_replacement, nth_permutation, nth_product

random_combination, random_combination_with_replacement, random_permutation, random_product

Wrapping

always_iterable, always_reversible, countable, consumer, with_iter, iter_except

Others

locate, rlocate, replace, numeric_range, side_effect, iterate, loops, difference, make_decorator, SequenceView, time_limited, map_if, iter_index, consume, tabulate, repeatfunc, reshape, doublestarmap

Getting started

To get started, install the library with pip:

pip install more-itertools

The recipes from the itertools docs are included in the top-level package:

>>> from more_itertools import flatten
>>> iterable = [(0, 1), (2, 3)]
>>> list(flatten(iterable))
[0, 1, 2, 3]

Several new recipes are available as well:

>>> from more_itertools import chunked
>>> iterable = [0, 1, 2, 3, 4, 5, 6, 7, 8]
>>> list(chunked(iterable, 3))
[[0, 1, 2], [3, 4, 5], [6, 7, 8]]

>>> from more_itertools import spy
>>> iterable = (x * x for x in range(1, 6))
>>> head, iterable = spy(iterable, n=3)
>>> list(head)
[1, 4, 9]
>>> list(iterable)
[1, 4, 9, 16, 25]

For the full listing of functions, see the API documentation.

Development

more-itertools is maintained by @erikrose and @bbayles, with help from many others. If you have a problem or suggestion, please file a bug or pull request in this repository. Thanks for contributing!

Version History

The version history can be found in documentation.

Project details

Verified details

These details have been verified by PyPI
Maintainers
Avatar for bbayles from gravatar.com bbayles Avatar for erikrose from gravatar.com erikrose

Unverified details

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Project links
Meta
  • License Expression: MIT
    SPDX License Expression
  • Author: Erik Rose
  • Tags itertools , iterator , iteration , filter , peek , peekable , chunk , chunked
  • Requires: Python >=3.9
Classifiers

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