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Test that pivot warns
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pandas/tests/reshape/test_pivot.py

Lines changed: 9 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -84,8 +84,8 @@ def test_pivot_table(self, observed):
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index = ["A", "B"]
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columns = "C"
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table = pivot_table(
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self.data, values="D", index=index, columns=columns, observed=observed
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)
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self.data, values="D", index=index, columns=columns,
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observed=observed)
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table2 = self.data.pivot_table(
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values="D", index=index, columns=columns, observed=observed
@@ -2186,3 +2186,10 @@ def test_pivot_index_list_values_none_immutable_args(self):
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assert index == ["lev1", "lev2"]
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assert columns == ["lev3"]
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def test_pivot_table_observed_deprecated_default(self):
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with tm.assert_produces_warning(FutureWarning):
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# make sure we actually have a category to warn on
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self.data.A = self.data.A.astype('category')
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self.data.pivot_table(values="D", index=["A", "B"],
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columns=["C"])

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