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')>>>fromcopyimportdeepcopy>>>deepcopy(a)Traceback (mostrecentcalllast):File"<stdin>",line1,in<module>File"/usr/lib/python3.10/copy.py",line161,indeepcopyrv=reductor(4)TypeError:cannotpickle'memoryview'object