New submission from leewz:
Meaning:
filter(False, lst)
== (x for x in lst if not x)
== itertools.filterfalse(None, lst)
I understand that it is a very minor enhancement, and with not much benefit. I
just happened to think about it, and wondered why it didn't already exist. I
figured it wouldn't hurt to put the idea out here.
(If anyone is interested, I was looking into ways that filter/map/itertools
could "unwrap" each other at the C level to improve composition of generators,
inspired by the functools.partial optimization.)
----------
messages: 256218
nosy: leewz
priority: normal
severity: normal
status: open
title: Allow `False` to be passed to `filter`
type: enhancement
versions: Python 3.6
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Python tracker <[email protected]>
<http://bugs.python.org/issue25840>
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