Comments (4)
Note that __slots__
must be defined in the actual class body in order to be effective, that's very important.
The above post-definition assignment does nothing except set a casual attribute, i.e. won't enable the special slots feature.
Minimal repro:
>>> from ctypes import *
>>>
>>> class TestStruct (Structure): pass
...
>>> TestStruct.__slots__ = ["a", "b"]
>>> s = TestStruct()
>>> s.c = 1
>>>
>>> class TestStruct (Structure):
... __slots__ = ["a", "b"]
...
>>> s = TestStruct()
>>> s.c = 1
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'TestStruct' object has no attribute 'c'
from ctypeslib.
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from ctypeslib.