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91 lines
3.1 KiB
Python
91 lines
3.1 KiB
Python
# Licensed to Elasticsearch B.V. under one or more contributor
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# license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright
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# ownership. Elasticsearch B.V. licenses this file to you under
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# the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License.
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# 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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import pytest
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# File called _pytest for PyCharm compatability
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from tests.common import TestData
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class TestDataFrameDrop(TestData):
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def test_drop(self, df):
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df.drop(labels=["Carrier", "DestCityName"], axis=1)
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df.drop(columns=["Carrier", "DestCityName"])
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df.drop(["1", "2"])
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df.drop(labels=["1", "2"], axis=0)
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df.drop(index=["1", "2"])
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df.drop(labels="3", axis=0)
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df.drop(columns="Carrier")
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df.drop(columns=["Carrier", "Carrier_1"], errors="ignore")
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df.drop(columns=["Carrier_1"], errors="ignore")
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def test_drop_all_columns(self, df):
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all_columns = list(df.columns)
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rows = df.shape[0]
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for dropped in (
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df.drop(labels=all_columns, axis=1),
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df.drop(columns=all_columns),
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df.drop(all_columns, axis=1),
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):
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assert dropped.shape == (rows, 0)
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assert list(dropped.columns) == []
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def test_drop_all_index(self, df):
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all_index = list(df.pd.index)
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cols = df.shape[1]
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for dropped in (
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df.drop(all_index),
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df.drop(all_index, axis=0),
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df.drop(index=all_index),
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):
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assert dropped.shape == (0, cols)
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assert list(dropped.to_pandas().index) == []
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def test_drop_raises(self):
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ed_flights = self.ed_flights()
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with pytest.raises(
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ValueError, match="Cannot specify both 'labels' and 'index'/'columns'"
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):
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ed_flights.drop(
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labels=["Carrier", "DestCityName"], columns=["Carrier", "DestCityName"]
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)
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with pytest.raises(
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ValueError, match="Cannot specify both 'labels' and 'index'/'columns'"
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):
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ed_flights.drop(labels=["Carrier", "DestCityName"], index=[0, 1, 2])
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with pytest.raises(
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ValueError,
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match="Need to specify at least one of 'labels', 'index' or 'columns'",
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):
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ed_flights.drop()
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with pytest.raises(
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ValueError,
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match="number of labels 0!=2 not contained in axis",
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):
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ed_flights.drop(errors="raise", axis=0, labels=["-1", "-2"])
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with pytest.raises(ValueError) as error:
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ed_flights.drop(columns=["Carrier_1"], errors="raise")
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assert str(error.value) == "labels ['Carrier_1'] not contained in axis"
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