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145 lines
4.2 KiB
Python
145 lines
4.2 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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from pandas import DataFrame
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from superset.utils.pandas_postprocessing import histogram
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data = DataFrame(
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{
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"group": ["A", "A", "B", "B", "A", "A", "B", "B", "A", "A"],
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"a": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
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"b": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
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}
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)
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bins = 5
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def test_histogram_no_groupby():
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data_with_no_groupings = DataFrame(
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{"a": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], "b": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]}
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)
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result = histogram(data_with_no_groupings, "a", [], bins)
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assert result.shape == (1, bins)
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assert result.columns.tolist() == ["1 - 2", "2 - 4", "4 - 6", "6 - 8", "8 - 10"]
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assert result.values.tolist() == [[2, 2, 2, 2, 2]]
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def test_histogram_with_groupby():
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result = histogram(data, "a", ["group"], bins)
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assert result.shape == (2, bins + 1)
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assert result.columns.tolist() == [
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"group",
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"1 - 2",
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"2 - 4",
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"4 - 6",
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"6 - 8",
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"8 - 10",
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]
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assert result.values.tolist() == [["A", 2, 0, 2, 0, 2], ["B", 0, 2, 0, 2, 0]]
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def test_histogram_with_groupby_and_normalize():
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result = histogram(data, "a", ["group"], bins, normalize=True)
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assert result.shape == (2, bins + 1)
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assert result.columns.tolist() == [
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"group",
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"1 - 2",
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"2 - 4",
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"4 - 6",
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"6 - 8",
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"8 - 10",
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]
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assert result.values.tolist() == [
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["A", 0.2, 0.0, 0.2, 0.0, 0.2],
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["B", 0.0, 0.2, 0.0, 0.2, 0.0],
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]
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def test_histogram_with_groupby_and_cumulative():
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result = histogram(data, "a", ["group"], bins, cumulative=True)
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assert result.shape == (2, bins + 1)
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assert result.columns.tolist() == [
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"group",
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"1 - 2",
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"2 - 4",
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"4 - 6",
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"6 - 8",
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"8 - 10",
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]
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assert result.values.tolist() == [["A", 2, 2, 4, 4, 6], ["B", 0, 2, 2, 4, 4]]
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def test_histogram_with_groupby_and_cumulative_and_normalize():
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result = histogram(data, "a", ["group"], bins, cumulative=True, normalize=True)
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assert result.shape == (2, bins + 1)
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assert result.columns.tolist() == [
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"group",
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"1 - 2",
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"2 - 4",
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"4 - 6",
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"6 - 8",
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"8 - 10",
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]
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assert result.values.tolist() == [
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[
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"A",
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0.06666666666666667,
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0.06666666666666667,
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0.13333333333333333,
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0.13333333333333333,
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0.2,
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],
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[
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"B",
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0.0,
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0.06666666666666667,
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0.06666666666666667,
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0.13333333333333333,
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0.13333333333333333,
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],
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]
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def test_histogram_with_non_numeric_column():
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try:
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histogram(data, "b", ["group"], bins)
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except ValueError as e:
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assert str(e) == "The column 'b' must be numeric."
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# test histogram ignore null values
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def test_histogram_ignore_null_values():
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data_with_null = DataFrame(
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{
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"group": ["A", "A", "B", "B", "A", "A", "B", "B", "A", "A"],
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"a": [1, 2, 3, 4, 5, 6, 7, 8, 9, None],
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"b": [1, 2, 3, 4, 5, 6, 7, 8, 9, None],
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}
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)
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result = histogram(data_with_null, "a", ["group"], bins)
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assert result.shape == (2, bins + 1)
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assert result.columns.tolist() == [
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"group",
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"1 - 2",
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"2 - 4",
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"4 - 5",
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"5 - 7",
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"7 - 9",
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]
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assert result.values.tolist() == [["A", 2, 0, 1, 1, 1], ["B", 0, 2, 0, 1, 1]]
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