gh-141510, PEP 814: Add frozendict support to pickle by vstinner · Pull Request #144967 · python/cpython

I will try to update my PR later to address other comments.

What about frozendict views and iterators? Are they copyable/pickleable?

keys, values and items views cannot be copied nor serialized by pickle.

Ah, it seems like it's possible to serialize a frozendict iterator.

Are there tests for deepcopying?

test_copy.test_deepcopy_frozendict() tests frozendict deepcopy.

I am surprised that there is no separate test_frozendict.py.

Ah. It was simple to add frozendict tests to existing test_dict. Maybe we can create test_frozendict later once we will add more tests.