bpo-20180: itertools.groupby Argument Clinic conversion #4170
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This PR contains a small part of the changes from PR #4117, which applies an extensive Argument Clinic conversion to all of
Modules/itertoolsmodule.c
.In an effort to streamline the process of reviewing that conversion, this PR only converts the
groupby
class and the internal_grouper
helper class. It also only converts the constructors, avoiding conversion of private methods such as__reduce__
and__setstate__
. Finally, it minimizes the doc-string changes, whereas the original PR mentioned above made significant changes to doc-strings in some cases.https://bugs.python.org/issue20180