@@ -1841,6 +1841,14 @@ def f(x):
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tm.assert_frame_equal(df.groupby(c).transform(sum), df[['a']])
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tm.assert_frame_equal(df.groupby(c).transform(lambda xs: np.sum(xs)), df[['a']])
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# GH 9603
1845 +
df = pd.DataFrame({'a': [1, 0, 0, 0]})
1846 +
c = pd.cut(df.a, [0, 1, 2, 3, 4])
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result = df.groupby(c).apply(len)
1848 +
expected = pd.Series([1, 0, 0, 0], index=c.values.categories)
1849 +
expected.index.name = 'a'
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tm.assert_series_equal(result, expected)
1851 + 1844 1852
def test_pivot_table(self):
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raw_cat1 = Categorical(["a","a","b","b"], categories=["a","b","z"], ordered=True)
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