119 lines
3.0 KiB
Python
119 lines
3.0 KiB
Python
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from copy import (
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copy,
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deepcopy,
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)
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import pytest
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from pandas import MultiIndex
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import pandas._testing as tm
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def assert_multiindex_copied(copy, original):
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# Levels should be (at least, shallow copied)
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tm.assert_copy(copy.levels, original.levels)
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tm.assert_almost_equal(copy.codes, original.codes)
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# Labels doesn't matter which way copied
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tm.assert_almost_equal(copy.codes, original.codes)
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assert copy.codes is not original.codes
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# Names doesn't matter which way copied
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assert copy.names == original.names
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assert copy.names is not original.names
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# Sort order should be copied
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assert copy.sortorder == original.sortorder
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def test_copy(idx):
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i_copy = idx.copy()
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assert_multiindex_copied(i_copy, idx)
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def test_shallow_copy(idx):
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i_copy = idx._view()
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assert_multiindex_copied(i_copy, idx)
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def test_view(idx):
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i_view = idx.view()
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assert_multiindex_copied(i_view, idx)
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@pytest.mark.parametrize("func", [copy, deepcopy])
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def test_copy_and_deepcopy(func):
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idx = MultiIndex(
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levels=[["foo", "bar"], ["fizz", "buzz"]],
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codes=[[0, 0, 0, 1], [0, 0, 1, 1]],
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names=["first", "second"],
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)
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idx_copy = func(idx)
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assert idx_copy is not idx
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assert idx_copy.equals(idx)
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@pytest.mark.parametrize("deep", [True, False])
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def test_copy_method(deep):
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idx = MultiIndex(
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levels=[["foo", "bar"], ["fizz", "buzz"]],
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codes=[[0, 0, 0, 1], [0, 0, 1, 1]],
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names=["first", "second"],
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)
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idx_copy = idx.copy(deep=deep)
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assert idx_copy.equals(idx)
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@pytest.mark.parametrize("deep", [True, False])
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@pytest.mark.parametrize(
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"kwarg, value",
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[
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("names", ["third", "fourth"]),
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],
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)
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def test_copy_method_kwargs(deep, kwarg, value):
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# gh-12309: Check that the "name" argument as well other kwargs are honored
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idx = MultiIndex(
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levels=[["foo", "bar"], ["fizz", "buzz"]],
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codes=[[0, 0, 0, 1], [0, 0, 1, 1]],
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names=["first", "second"],
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)
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idx_copy = idx.copy(**{kwarg: value, "deep": deep})
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assert getattr(idx_copy, kwarg) == value
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@pytest.mark.parametrize("deep", [True, False])
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@pytest.mark.parametrize(
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"param_name, param_value",
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[
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("levels", [["foo2", "bar2"], ["fizz2", "buzz2"]]),
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("codes", [[1, 0, 0, 0], [1, 1, 0, 0]]),
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],
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)
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def test_copy_deprecated_parameters(deep, param_name, param_value):
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# gh-36685
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idx = MultiIndex(
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levels=[["foo", "bar"], ["fizz", "buzz"]],
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codes=[[0, 0, 0, 1], [0, 0, 1, 1]],
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names=["first", "second"],
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)
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with tm.assert_produces_warning(FutureWarning):
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idx_copy = idx.copy(deep=deep, **{param_name: param_value})
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assert [list(i) for i in getattr(idx_copy, param_name)] == param_value
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def test_copy_deep_false_retains_id():
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# GH#47878
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idx = MultiIndex(
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levels=[["foo", "bar"], ["fizz", "buzz"]],
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codes=[[0, 0, 0, 1], [0, 0, 1, 1]],
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names=["first", "second"],
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)
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res = idx.copy(deep=False)
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assert res._id is idx._id
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