New submission from Ethan Furman:
Consider:
==================================================================================
-->from enum import Enum
-->class Color(Enum):
... red = 1
... green = 2
... blue = 3
... red = 4
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 5, in Color
File "/home/ethan/source/python/issue18924/Lib/enum.py", line 87, in
__setitem__
raise TypeError('Attempted to reuse key: %r' % key)
TypeError: Attempted to reuse key: 'red'
==================================================================================
versus
==================================================================================
-->class Color(Enum):
... red = 1
... green = 2
... blue = 3
... def red(self):
... return 'fooled ya!'
...
# no error
==================================================================================
or
==================================================================================
-->class Color(Enum):
... red = 1
... green = 2
... blue = 3
... @property
... def red(self):
... return 'fooled ya!'
...
# no error
==================================================================================
In both of the latter two cases the redefinition of 'red' is allowed because
the new definition is not an enum member.
This is inconsistent as well as confusing.
I know normal class creation semantics don't place any such limitations on
names and allow redefining at will, but Enum is not a regular class.
----------
assignee: ethan.furman
files: no_reuse_of_enum_names.stoneleaf.01.patch
keywords: patch
messages: 197375
nosy: barry, eli.bendersky, eric.snow, ethan.furman, ncoghlan, pitrou
priority: normal
severity: normal
status: open
title: reuse of enum names in class creation inconsistent
type: behavior
versions: Python 3.4
Added file:
http://bugs.python.org/file31699/no_reuse_of_enum_names.stoneleaf.01.patch
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Python tracker <[email protected]>
<http://bugs.python.org/issue18989>
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