[issue28537] abc module fails to reject instantiation of some multiply-inheriting classes that fail to implement abstract methods

2016-10-25 Thread R. David Murray 

R. David Murray added the comment:

Thanks for the report, but this is a duplicate of issue 5996.

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nosy: +r.david.murray
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> abstract class instantiable when subclassing dict

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[issue28537] abc module fails to reject instantiation of some multiply-inheriting classes that fail to implement abstract methods

2016-10-25 Thread Chris Rebert 

Changes by Chris Rebert :


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nosy: +cvrebert

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[issue28537] abc module fails to reject instantiation of some multiply-inheriting classes that fail to implement abstract methods

2016-10-25 Thread Nathaniel Manista 

New submission from Nathaniel Manista:

The attached file when executed should fail (raise an exception) one line above 
where it actually does. Right?

I discovered this in 2.7 but have confirmed that it's still a problem in 
3.6.0b2.

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components: Library (Lib)
files: abc_what.py
messages: 279465
nosy: Nathaniel Manista, aleax
priority: normal
severity: normal
status: open
title: abc module fails to reject instantiation of some multiply-inheriting 
classes that fail to implement abstract methods
type: behavior
versions: Python 2.7, Python 3.3, Python 3.4, Python 3.5, Python 3.6, Python 3.7
Added file: http://bugs.python.org/file45226/abc_what.py

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