deepcopy memoryview raises TypeError #95081
Description
Bug report
Calling deepcopy on a memoryview raises a TypeError, this looks similar to bug 82474 #82474
This also breaks BinaryField when using Django Polymorphic
jazzband/django-polymorphic#524
Your environment
- CPython versions tested on: 3.8, 3.10
- Operating system and architecture: Ubuntu 21.10
>>> a = memoryview(b'123')
>>> from copy import deepcopy
>>> deepcopy(a)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.10/copy.py", line 161, in deepcopy
rv = reductor(4)
TypeError: cannot pickle 'memoryview' object