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TST: test loc index df with a MultiIndex and constituent IntervalIndex #52811

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TST: test loc index df with a MultiIndex and constituent IntervalIndex #52811

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13 changes: 13 additions & 0 deletions pandas/tests/indexing/multiindex/test_loc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -971,3 +971,16 @@ def test_multindex_series_loc_with_tuple_label():
ser = Series([1, 2], index=mi)
result = ser.loc[(3, (4, 5))]
assert result == 2

def test_loc_multiindex_and_intervalindex():
#https://github.com/pandas-dev/pandas/issues/25298
#test to index the dataframe with a MultiIndex and IntervalIndex
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You can remove all comments except the link to the GitHub issue


#create an IntervalIndex
ii = pd.IntervalIndex.from_arrays([1, 5, 2, 6, 3, 7], [4, 8, 5, 9, 6, 10])
#create a MultiIndex using the IntervalIndex and an array of strings
mi = pd.MultiIndex.from_arrays([["aa", "aa", "bb", "bb", "cc", "cc"], ii])
data = [(1, 2), (3, 4), (5, 6), (7, 8), (9, 10), (11, 12)]
df = pd.DataFrame(data, columns=['k', 'l'], index=mi)
result = pd.DataFrame({'k': [5], 'l': [6]}, index=pd.MultiIndex.from_tuples([('bb', pd.Interval(2, 5))], names=[None, None]))
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Can you run pre-commit? This line is too long

assert result.equals(df.loc[("bb", 3)])