410 lines
13 KiB
Python
410 lines
13 KiB
Python
from datetime import datetime
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import operator
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import numpy as np
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import pytest
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from pandas import (
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Series,
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_testing as tm,
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)
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def test_title(any_string_dtype):
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s = Series(["FOO", "BAR", np.nan, "Blah", "blurg"], dtype=any_string_dtype)
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result = s.str.title()
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expected = Series(["Foo", "Bar", np.nan, "Blah", "Blurg"], dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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def test_title_mixed_object():
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s = Series(["FOO", np.nan, "bar", True, datetime.today(), "blah", None, 1, 2.0])
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result = s.str.title()
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expected = Series(
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["Foo", np.nan, "Bar", np.nan, np.nan, "Blah", np.nan, np.nan, np.nan]
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)
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tm.assert_almost_equal(result, expected)
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def test_lower_upper(any_string_dtype):
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s = Series(["om", np.nan, "nom", "nom"], dtype=any_string_dtype)
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result = s.str.upper()
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expected = Series(["OM", np.nan, "NOM", "NOM"], dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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result = result.str.lower()
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tm.assert_series_equal(result, s)
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def test_lower_upper_mixed_object():
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s = Series(["a", np.nan, "b", True, datetime.today(), "foo", None, 1, 2.0])
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result = s.str.upper()
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expected = Series(["A", np.nan, "B", np.nan, np.nan, "FOO", np.nan, np.nan, np.nan])
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tm.assert_series_equal(result, expected)
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result = s.str.lower()
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expected = Series(["a", np.nan, "b", np.nan, np.nan, "foo", np.nan, np.nan, np.nan])
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tm.assert_series_equal(result, expected)
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@pytest.mark.parametrize(
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"data, expected",
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[
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(
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["FOO", "BAR", np.nan, "Blah", "blurg"],
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["Foo", "Bar", np.nan, "Blah", "Blurg"],
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),
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(["a", "b", "c"], ["A", "B", "C"]),
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(["a b", "a bc. de"], ["A b", "A bc. de"]),
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],
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)
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def test_capitalize(data, expected, any_string_dtype):
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s = Series(data, dtype=any_string_dtype)
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result = s.str.capitalize()
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expected = Series(expected, dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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def test_capitalize_mixed_object():
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s = Series(["FOO", np.nan, "bar", True, datetime.today(), "blah", None, 1, 2.0])
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result = s.str.capitalize()
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expected = Series(
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["Foo", np.nan, "Bar", np.nan, np.nan, "Blah", np.nan, np.nan, np.nan]
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)
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tm.assert_series_equal(result, expected)
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def test_swapcase(any_string_dtype):
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s = Series(["FOO", "BAR", np.nan, "Blah", "blurg"], dtype=any_string_dtype)
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result = s.str.swapcase()
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expected = Series(["foo", "bar", np.nan, "bLAH", "BLURG"], dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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def test_swapcase_mixed_object():
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s = Series(["FOO", np.nan, "bar", True, datetime.today(), "Blah", None, 1, 2.0])
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result = s.str.swapcase()
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expected = Series(
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["foo", np.nan, "BAR", np.nan, np.nan, "bLAH", np.nan, np.nan, np.nan]
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)
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tm.assert_series_equal(result, expected)
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def test_casefold():
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# GH25405
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expected = Series(["ss", np.nan, "case", "ssd"])
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s = Series(["ß", np.nan, "case", "ßd"])
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result = s.str.casefold()
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tm.assert_series_equal(result, expected)
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def test_casemethods(any_string_dtype):
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values = ["aaa", "bbb", "CCC", "Dddd", "eEEE"]
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s = Series(values, dtype=any_string_dtype)
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assert s.str.lower().tolist() == [v.lower() for v in values]
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assert s.str.upper().tolist() == [v.upper() for v in values]
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assert s.str.title().tolist() == [v.title() for v in values]
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assert s.str.capitalize().tolist() == [v.capitalize() for v in values]
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assert s.str.swapcase().tolist() == [v.swapcase() for v in values]
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def test_pad(any_string_dtype):
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s = Series(["a", "b", np.nan, "c", np.nan, "eeeeee"], dtype=any_string_dtype)
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result = s.str.pad(5, side="left")
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expected = Series(
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[" a", " b", np.nan, " c", np.nan, "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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result = s.str.pad(5, side="right")
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expected = Series(
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["a ", "b ", np.nan, "c ", np.nan, "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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result = s.str.pad(5, side="both")
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expected = Series(
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[" a ", " b ", np.nan, " c ", np.nan, "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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def test_pad_mixed_object():
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s = Series(["a", np.nan, "b", True, datetime.today(), "ee", None, 1, 2.0])
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result = s.str.pad(5, side="left")
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expected = Series(
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[" a", np.nan, " b", np.nan, np.nan, " ee", np.nan, np.nan, np.nan]
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)
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tm.assert_series_equal(result, expected)
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result = s.str.pad(5, side="right")
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expected = Series(
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["a ", np.nan, "b ", np.nan, np.nan, "ee ", np.nan, np.nan, np.nan]
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)
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tm.assert_series_equal(result, expected)
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result = s.str.pad(5, side="both")
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expected = Series(
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[" a ", np.nan, " b ", np.nan, np.nan, " ee ", np.nan, np.nan, np.nan]
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)
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tm.assert_series_equal(result, expected)
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def test_pad_fillchar(any_string_dtype):
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s = Series(["a", "b", np.nan, "c", np.nan, "eeeeee"], dtype=any_string_dtype)
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result = s.str.pad(5, side="left", fillchar="X")
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expected = Series(
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["XXXXa", "XXXXb", np.nan, "XXXXc", np.nan, "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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result = s.str.pad(5, side="right", fillchar="X")
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expected = Series(
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["aXXXX", "bXXXX", np.nan, "cXXXX", np.nan, "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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result = s.str.pad(5, side="both", fillchar="X")
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expected = Series(
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["XXaXX", "XXbXX", np.nan, "XXcXX", np.nan, "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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def test_pad_fillchar_bad_arg_raises(any_string_dtype):
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s = Series(["a", "b", np.nan, "c", np.nan, "eeeeee"], dtype=any_string_dtype)
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msg = "fillchar must be a character, not str"
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with pytest.raises(TypeError, match=msg):
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s.str.pad(5, fillchar="XY")
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msg = "fillchar must be a character, not int"
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with pytest.raises(TypeError, match=msg):
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s.str.pad(5, fillchar=5)
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@pytest.mark.parametrize("method_name", ["center", "ljust", "rjust", "zfill", "pad"])
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def test_pad_width_bad_arg_raises(method_name, any_string_dtype):
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# see gh-13598
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s = Series(["1", "22", "a", "bb"], dtype=any_string_dtype)
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op = operator.methodcaller(method_name, "f")
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msg = "width must be of integer type, not str"
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with pytest.raises(TypeError, match=msg):
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op(s.str)
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def test_center_ljust_rjust(any_string_dtype):
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s = Series(["a", "b", np.nan, "c", np.nan, "eeeeee"], dtype=any_string_dtype)
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result = s.str.center(5)
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expected = Series(
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[" a ", " b ", np.nan, " c ", np.nan, "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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result = s.str.ljust(5)
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expected = Series(
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["a ", "b ", np.nan, "c ", np.nan, "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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result = s.str.rjust(5)
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expected = Series(
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[" a", " b", np.nan, " c", np.nan, "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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def test_center_ljust_rjust_mixed_object():
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s = Series(["a", np.nan, "b", True, datetime.today(), "c", "eee", None, 1, 2.0])
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result = s.str.center(5)
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expected = Series(
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[
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" a ",
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np.nan,
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" b ",
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np.nan,
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np.nan,
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" c ",
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" eee ",
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np.nan,
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np.nan,
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np.nan,
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]
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)
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tm.assert_series_equal(result, expected)
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result = s.str.ljust(5)
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expected = Series(
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[
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"a ",
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np.nan,
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"b ",
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np.nan,
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np.nan,
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"c ",
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"eee ",
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np.nan,
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np.nan,
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np.nan,
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]
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)
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tm.assert_series_equal(result, expected)
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result = s.str.rjust(5)
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expected = Series(
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[
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" a",
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np.nan,
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" b",
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np.nan,
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np.nan,
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" c",
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" eee",
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np.nan,
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np.nan,
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np.nan,
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]
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)
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tm.assert_series_equal(result, expected)
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def test_center_ljust_rjust_fillchar(any_string_dtype):
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s = Series(["a", "bb", "cccc", "ddddd", "eeeeee"], dtype=any_string_dtype)
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result = s.str.center(5, fillchar="X")
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expected = Series(
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["XXaXX", "XXbbX", "Xcccc", "ddddd", "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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expected = np.array([v.center(5, "X") for v in np.array(s)], dtype=np.object_)
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tm.assert_numpy_array_equal(np.array(result, dtype=np.object_), expected)
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result = s.str.ljust(5, fillchar="X")
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expected = Series(
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["aXXXX", "bbXXX", "ccccX", "ddddd", "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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expected = np.array([v.ljust(5, "X") for v in np.array(s)], dtype=np.object_)
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tm.assert_numpy_array_equal(np.array(result, dtype=np.object_), expected)
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result = s.str.rjust(5, fillchar="X")
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expected = Series(
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["XXXXa", "XXXbb", "Xcccc", "ddddd", "eeeeee"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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expected = np.array([v.rjust(5, "X") for v in np.array(s)], dtype=np.object_)
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tm.assert_numpy_array_equal(np.array(result, dtype=np.object_), expected)
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def test_center_ljust_rjust_fillchar_bad_arg_raises(any_string_dtype):
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s = Series(["a", "bb", "cccc", "ddddd", "eeeeee"], dtype=any_string_dtype)
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# If fillchar is not a character, normal str raises TypeError
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# 'aaa'.ljust(5, 'XY')
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# TypeError: must be char, not str
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template = "fillchar must be a character, not {dtype}"
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with pytest.raises(TypeError, match=template.format(dtype="str")):
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s.str.center(5, fillchar="XY")
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with pytest.raises(TypeError, match=template.format(dtype="str")):
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s.str.ljust(5, fillchar="XY")
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with pytest.raises(TypeError, match=template.format(dtype="str")):
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s.str.rjust(5, fillchar="XY")
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with pytest.raises(TypeError, match=template.format(dtype="int")):
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s.str.center(5, fillchar=1)
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with pytest.raises(TypeError, match=template.format(dtype="int")):
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s.str.ljust(5, fillchar=1)
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with pytest.raises(TypeError, match=template.format(dtype="int")):
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s.str.rjust(5, fillchar=1)
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def test_zfill(any_string_dtype):
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s = Series(["1", "22", "aaa", "333", "45678"], dtype=any_string_dtype)
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result = s.str.zfill(5)
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expected = Series(
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["00001", "00022", "00aaa", "00333", "45678"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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expected = np.array([v.zfill(5) for v in np.array(s)], dtype=np.object_)
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tm.assert_numpy_array_equal(np.array(result, dtype=np.object_), expected)
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result = s.str.zfill(3)
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expected = Series(["001", "022", "aaa", "333", "45678"], dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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expected = np.array([v.zfill(3) for v in np.array(s)], dtype=np.object_)
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tm.assert_numpy_array_equal(np.array(result, dtype=np.object_), expected)
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s = Series(["1", np.nan, "aaa", np.nan, "45678"], dtype=any_string_dtype)
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result = s.str.zfill(5)
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expected = Series(
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["00001", np.nan, "00aaa", np.nan, "45678"], dtype=any_string_dtype
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)
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tm.assert_series_equal(result, expected)
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def test_wrap(any_string_dtype):
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# test values are: two words less than width, two words equal to width,
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# two words greater than width, one word less than width, one word
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# equal to width, one word greater than width, multiple tokens with
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# trailing whitespace equal to width
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s = Series(
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[
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"hello world",
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"hello world!",
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"hello world!!",
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"abcdefabcde",
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"abcdefabcdef",
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"abcdefabcdefa",
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"ab ab ab ab ",
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"ab ab ab ab a",
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"\t",
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],
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dtype=any_string_dtype,
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)
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# expected values
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expected = Series(
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[
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"hello world",
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"hello world!",
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"hello\nworld!!",
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"abcdefabcde",
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"abcdefabcdef",
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"abcdefabcdef\na",
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"ab ab ab ab",
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"ab ab ab ab\na",
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"",
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],
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dtype=any_string_dtype,
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)
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result = s.str.wrap(12, break_long_words=True)
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tm.assert_series_equal(result, expected)
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def test_wrap_unicode(any_string_dtype):
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# test with pre and post whitespace (non-unicode), NaN, and non-ascii Unicode
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s = Series(
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[" pre ", np.nan, "\xac\u20ac\U00008000 abadcafe"], dtype=any_string_dtype
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)
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expected = Series(
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[" pre", np.nan, "\xac\u20ac\U00008000 ab\nadcafe"], dtype=any_string_dtype
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)
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result = s.str.wrap(6)
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tm.assert_series_equal(result, expected)
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