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| -rw-r--r-- | Doc/library/functions.rst | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst index 46e77fdb41..5400feb355 100644 --- a/Doc/library/functions.rst +++ b/Doc/library/functions.rst @@ -1894,14 +1894,24 @@ are always available. They are listed here in alphabetical order. >>> list(zip(('a', 'b', 'c'), (1, 2, 3), strict=True)) [('a', 1), ('b', 2), ('c', 3)] - Unlike the default behavior, it checks that the lengths of iterables are - identical, raising a :exc:`ValueError` if they aren't: - - >>> list(zip(range(3), ['fee', 'fi', 'fo', 'fum'], strict=True)) + Unlike the default behavior, it raises a :exc:`ValueError` if one iterable + is exhausted before the others: + + >>> for item in zip(range(3), ['fee', 'fi', 'fo', 'fum'], strict=True): # doctest: +SKIP + ... print(item) + ... + (0, 'fee') + (1, 'fi') + (2, 'fo') Traceback (most recent call last): ... ValueError: zip() argument 2 is longer than argument 1 + .. + This doctest is disabled because doctest does not support capturing + output and exceptions in the same code unit. + https://github.com/python/cpython/issues/65382 + Without the ``strict=True`` argument, any bug that results in iterables of different lengths will be silenced, possibly manifesting as a hard-to-find bug in another part of the program. |