New submission from Horacio Hoyos:
Hi, attempt 2.
My system is MacOs Yosemite (10.10.5), I have installed Python 3.6.1 downloaded
from the official Python website.
I was having issues while testing a custom Set implementation using the
_collections_abc base MutableSet and found that my issue was apparently
resolved with issue 8743. From the fix, in the attached script I would expect
the and operation between my set implementation and a string to fail with a
TypeError, given that string is not an instance of Set. However, the error is
not raised, i.e. the print statement is executed.
>From the discussion on issue 8743, I would expect _collections_abc.py to have
>a test for Set instances, but is not the case (for example):
def __and__(self, other):
if not isinstance(other, Iterable):
return NotImplemented
return self._from_iterable(value for value in other if value in self)
That is, I was expecting a isinstance(other, Set) somewhere there.
In my previous post I was told my python installation was broken. However, I
checked the collections_abc.py in my windows system and is the same. I am not
an expert on the Python build system, but the patch in bug 8743 applies to
/Lib/_abcoll.py, but I guess _collections_abc.py is generated somehow.
----------
components: Library (Lib), macOS
messages: 292175
nosy: Horacio Hoyos, ned.deily, ronaldoussoren
priority: normal
severity: normal
status: open
title: Fix for issue 8743 not available in python MacOS 3.6.1
versions: Python 3.6
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Python tracker <[email protected]>
<http://bugs.python.org/issue30146>
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