Description
GroupByTest.test_tail GroupByTest.test_head
[1] https://pandas.pydata.org/docs/whatsnew/v1.4.0.html#groupby-positional-indexing
[2]https://github.com/pandas-dev/pandas/pull/42947
GroupByTest.test_tail GroupByTest.test_head
[1] https://pandas.pydata.org/docs/whatsnew/v1.4.0.html#groupby-positional-indexing
[2]https://github.com/pandas-dev/pandas/pull/42947