gh-153612: Add copyreg.copy() and copyreg.deepcopy()#153613
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gh-153612: Add copyreg.copy() and copyreg.deepcopy()#153613serhiy-storchaka wants to merge 2 commits into
serhiy-storchaka wants to merge 2 commits into
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Register shallow and deep copy functions for instances of types that cannot be modified. copy.copy() and copy.deepcopy() use them in preference to the __copy__ and __deepcopy__ special methods and the pickle interfaces, without affecting pickling. The public dispatch tables also hold the handlers for the built-in container types; the private copy._deepcopy_dispatch is removed. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Add registration of shallow and deep copy functions for instances of types that cannot be modified, following the
copyreg.pickle()precedent.copy.copy()andcopy.deepcopy()use the registered functions in preference to the__copy__/__deepcopy__special methods and the pickle interfaces. Registration is by exact type and does not affect pickling.The registries are the public tables
copyreg.copy_dispatch_tableandcopyreg.deepcopy_dispatch_table, which also hold the handlers for the built-in container types. The private_deepcopy_dispatchis removed, following the removal of_copy_dispatchin gh-128118.Closes gh-153612.
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