Importing ABC directly from collections was deprecated and will be removed in Python 3.10. Use collections.abc

[tirkarthi]

memoize/options.py
2:from collections import Callable

[antooro]

UPDATE:

DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.9 it will stop working