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Groupby Agg not working if different partials with same name on the same column #45075

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Groupby Agg not working if different partials with same name on the same column #45075

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67dd1fa
Adding a test case for the issue 28570
aliraeisdanaei Dec 26, 2021
9803479
Made some PEP 8 changes, and fixed the assert line.
aliraeisdanaei Dec 27, 2021
4d4a023
Removed unnecessary lines from function
aliraeisdanaei Dec 27, 2021
48213b0
Made minor changes to naming and took out the imbedded function in th…
aliraeisdanaei Jan 2, 2022
85dfe6c
Change comment to allow for easier greping
aliraeisdanaei Jan 10, 2022
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20 changes: 20 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 @@ -62,6 +62,26 @@ def test_agg_ser_multi_key(df):
tm.assert_series_equal(results, expected)


def test_agg_different_partials():
# for issue 28570

quant50 = partial(np.percentile, q=50)
quant50.__name__ = "quant50"
quant70 = partial(np.percentile, q=70)
quant70.__name__ = "quant70"

df = pd.DataFrame({"col1": ["a", "a", "b", "b", "b"], "col2": [1, 2, 3, 4, 5]})
result = df.groupby("col1").agg({"col2": [quant50, quant70]})

expected = pd.DataFrame(
{"col1": ["a", "b"], "quant50": [1.5, 4.0], "quant70": [1.7, 4.4]}
)
expected = expected.set_index("col1")
expected.columns = pd.MultiIndex.from_product([["col2"], expected.columns])

tm.assert_frame_equal(result, expected)


def test_groupby_aggregation_mixed_dtype():
# GH 6212
expected = DataFrame(
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