[issue35048] Can't reassign __class__ despite the assigned class having identical slots

Raymond Hettinger added the comment: The relevant logic is in the compatible_for_assignment() function on line 3972 in Objects/typeobject.c. After checking that the tp_free slots are the same, it proceeds as follows: /* It's tricky to tell if two arbitrary types are sufficiently com

[issue35048] Can't reassign __class__ despite the assigned class having identical slots

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[issue35048] Can't reassign __class__ despite the assigned class having identical slots

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[issue35048] Can't reassign __class__ despite the assigned class having identical slots

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[issue35048] Can't reassign __class__ despite the assigned class having identical slots

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[issue35048] Can't reassign __class__ despite the assigned class having identical slots

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[issue35048] Can't reassign __class__ despite the assigned class having identical slots

Change by Srinivas Reddy Thatiparthy(శ్రీనివాస్ రెడ్డి తాటిపర్తి) : -- nosy: +thatiparthy ___ Python tracker ___ ___ Python-bugs-li

[issue35048] Can't reassign __class__ despite the assigned class having identical slots

New submission from Dan Snider : >>> class a(dict): __slots__ = '__dict__', 'x' >>> class b(dict): __slots__ = '__dict__', 'x' >>> self = a(); self.__class__ = b Traceback (most recent call last): File "", line 1, in self=a(); self.__class__ = b TypeError: __class__ assignment: 'b' obje