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The
collections
module will remove the top-level aliases for the classes that now belong incollections.abc
.We have a redirect in
compat.py
, and this PR simply uses it from our Pandas extra.I also investigated enabling
-Werror
for the Pandas extra, but was quickly foiled by the volume of warnings about Numpy/Pandas/Cython versions and deprecation pathways etc. It's certainly possible to make this work, but not across every version of Pandas we test against!