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TST: Groupby.agg with mutliples ignores as_index False #52395

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Merged
merged 1 commit into from
Apr 4, 2023
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TST: Groupby.agg with mutliples ignores as_index False #52395

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9 changes: 9 additions & 0 deletions pandas/tests/groupby/aggregate/test_aggregate.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1577,3 +1577,12 @@ def test_agg_groupings_selection():
)
expected = DataFrame({"b": [6, 4], "c": [11, 7]}, index=index)
tm.assert_frame_equal(result, expected)


def test_agg_multiple_with_as_index_false_subset_to_a_single_column():
# GH#50724
df = DataFrame({"a": [1, 1, 2], "b": [3, 4, 5]})
gb = df.groupby("a", as_index=False)["b"]
result = gb.agg(["sum", "mean"])
expected = DataFrame({"a": [1, 2], "sum": [7, 5], "mean": [3.5, 5.0]})
tm.assert_frame_equal(result, expected)