[issue9212] dict_keys purports to implement the Set ABC, but is missing the isdisjoint method

[Daniel Stutzbach]

New submission from Daniel Stutzbach <daniel at stutzbachenterprises.com>:

>>> isinstance({}.keys(), collections.Set)
True
>>> [method for method in set(dir(collections.Set)) - set(dir({}.keys()))
...  if not method.startswith('_')]
['isdisjoint']

(in Python 2.7, use "viewkeys()" instead of "keys")

dict_items has the same problem.

----------
assignee: stutzbach
components: Interpreter Core
messages: 109783
nosy: stutzbach
priority: normal
severity: normal
stage: unit test needed
status: open
title: dict_keys purports to implement the Set ABC, but is missing the isdisjoint method
versions: Python 2.7, Python 3.1, Python 3.2

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9212>
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