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[3.13] Itertools docs: fix parameter names and indentation in Python equivalents (gh-118977) (#119043)

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Miss Islington (bot) 2024-05-14 17:11:31 +02:00 • committed by GitHub
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10
Doc/library/itertools.rst
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@ -380,7 +380,7 @@ loops that truncate the stream.
saved.append(element) saved.append(element)
while saved: while saved:
for element in saved: for element in saved:
yield element yield element
Note, this member of the toolkit may require significant auxiliary storage Note, this member of the toolkit may require significant auxiliary storage
(depending on the length of the iterable). (depending on the length of the iterable).
@ -615,10 +615,10 @@ loops that truncate the stream.
This function is roughly equivalent to the following code, except that the This function is roughly equivalent to the following code, except that the
actual implementation does not build up intermediate results in memory:: actual implementation does not build up intermediate results in memory::
def product(*args, repeat=1): def product(*iterables, repeat=1):
# product('ABCD', 'xy') → Ax Ay Bx By Cx Cy Dx Dy # product('ABCD', 'xy') → Ax Ay Bx By Cx Cy Dx Dy
# product(range(2), repeat=3) → 000 001 010 011 100 101 110 111 # product(range(2), repeat=3) → 000 001 010 011 100 101 110 111
pools = [tuple(pool) for pool in args] * repeat pools = [tuple(pool) for pool in iterables] * repeat
result = [[]] result = [[]]
for pool in pools: for pool in pools:
result = [x+[y] for x in result for y in pool] result = [x+[y] for x in result for y in pool]
@ -735,9 +735,9 @@ loops that truncate the stream.
iterables are of uneven length, missing values are filled-in with *fillvalue*. iterables are of uneven length, missing values are filled-in with *fillvalue*.
Iteration continues until the longest iterable is exhausted. Roughly equivalent to:: Iteration continues until the longest iterable is exhausted. Roughly equivalent to::
def zip_longest(*args, fillvalue=None): def zip_longest(*iterables, fillvalue=None):
# zip_longest('ABCD', 'xy', fillvalue='-') → Ax By C- D- # zip_longest('ABCD', 'xy', fillvalue='-') → Ax By C- D-
iterators = [iter(it) for it in args] iterators = [iter(it) for it in iterables]
num_active = len(iterators) num_active = len(iterators)
if not num_active: if not num_active:
return return