Changes by Caleb Levy caleb.l...@berkeley.edu:
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components: Library (Lib)
nosy: clevy, rhettinger, stutzbach
priority: normal
severity: normal
status: open
title: ItemsView.__contains__ does not mimic dict_items
type: behavior
versions: Python 2.7, Python 3.2, Python 3.3, Python 3.4
New submission from Caleb Levy:
The current implementation ItemsView.__contains__ reads
class ItemsView(MappingView, Set):
...
def __contains__(self, item):
key, value = item
try:
v = self._mapping[key]
except KeyError:
return False
Caleb Levy added the comment:
@serhiy.storchaka: I don't think that will work.
First of all,
x, y = item
will raise a ValueError if fed an iterable whose length is not exactly 2, so
you would have to check for that. Moreover, if item is something like a dict,
for example
Caleb Levy added the comment:
Sorry; that should be DictLikeMapping(a=b).items(), where DictLikeMapping is
defined in the patch unit tests.
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue24434
