New submission from ppperry:
If you try to set the __class__ of a type which doesn't support "__class__"
assignments, you get the error message:
TypeError: __class__ assignment only supported for heap types or ModuleType
subclasses
However, the actual restriction doesn't require a subclass of "ModuleType"; the
below code works:
import random
class M(type(random)):pass
random.__class__ = M
Thus the error message is incorrect.
----------
components: Interpreter Core
messages: 289448
nosy: ppperry
priority: normal
severity: normal
status: open
title: Incorrect error message on invalid __class__ assignments
type: behavior
versions: Python 3.6
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue29794>
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