New submission from Steven D'Aprano <[email protected]>:
The functools module imports reduce from _functools, using a guard in case it
is not present:
try:
from _functools import reduce
except ImportError:
pass
However, the documentation says nothing about reduce being optional, and it is
unconditionally included in the module __all__.
If reduce is guaranteed to be implemented in _functools, then the guard is
redundant and should be removed. Otherwise, a pure python fallback should be
added.
(The docs for reduce include a pure Python equivalent which might be
sufficient.)
----------
components: Library (Lib)
keywords: easy
messages: 308297
nosy: steven.daprano
priority: normal
severity: normal
status: open
title: functools.reduce has a redundant guard or needs a pure Python fallback
versions: Python 3.7
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Python tracker <[email protected]>
<https://bugs.python.org/issue32321>
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