I'm not sure what to make of this, but it tripped me up when isinstance(Hashable) unexpectedly returned true for bitarray objects. Example:
Python 3.12.9 (tags/v3.12.9:fdb8142, Feb 4 2025, 15:27:58) [MSC v.1942 64 bit (AMD64)] on win32
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>>> from bitarray import bitarray
>>> from collections.abc import Hashable
>>> ba = bitarray()
>>> isinstance(ba, Hashable)
True
>>> ba.__hash__
<method-wrapper '__hash__' of bitarray.bitarray object at 0x000001F1A18633C0>
>>> ba.__hash__()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'bitarray.bitarray'
The weird part is that it only happens on windows. The isinstance check correctly returns false on linux, and the __hash__ method doesn't exist.
Tested on python 3.12, bitarray 2.9.2 and 3.3.0. [edit: installed on windows via py -m pip install bitarray=={version}, on linux installed from apt)]
I'm not sure what to make of this, but it tripped me up when
isinstance(Hashable)unexpectedly returned true for bitarray objects. Example:The weird part is that it only happens on windows. The isinstance check correctly returns false on linux, and the
__hash__method doesn't exist.Tested on python 3.12, bitarray 2.9.2 and 3.3.0. [edit: installed on windows via
py -m pip install bitarray=={version}, on linux installed from apt)]