More Itertools ¶

Python’sitertools library is a gem - you can compose elegant solutionsfor a variety of problems with the functions it provides. Inmore-itertoolswe collect additional building blocks, recipes, and routines for working withPython 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 withpip:

pipinstallmore-itertools

The recipes from theitertools docsare included in the top-level package:

>>>frommore_itertoolsimportflatten>>>iterable=[(0,1),(2,3)]>>>list(flatten(iterable))[0, 1, 2, 3]

Several new recipes are available as well:

>>>frommore_itertoolsimportchunked>>>iterable=[0,1,2,3,4,5,6,7,8]>>>list(chunked(iterable,3))[[0, 1, 2], [3, 4, 5], [6, 7, 8]]>>>frommore_itertoolsimportspy>>>iterable=(x*xforxinrange(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 theAPI documentation.

Links elsewhere¶

Blog posts aboutmore-itertools:

Development¶

more-itertools is maintained by@erikroseand@bbayles, with help frommany others.If you have a problem or suggestion, please file a bug or pull request in thisrepository. Thanks for contributing!

Version History¶

The version history can be found indocumentation.

On this page

More Itertools

Movatterモバイル変換

More Itertools¶

Getting started¶

Links elsewhere¶

Development¶

Version History¶

More Itertools ¶