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925 lines
32 KiB
925 lines
32 KiB
from datetime import datetime
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import re
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import numpy as np
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import pytest
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import pandas as pd
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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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# --------------------------------------------------------------------------------------
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# str.contains
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# --------------------------------------------------------------------------------------
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def test_contains(any_string_dtype):
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values = np.array(
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["foo", np.nan, "fooommm__foo", "mmm_", "foommm[_]+bar"], dtype=np.object_
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)
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values = Series(values, dtype=any_string_dtype)
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pat = "mmm[_]+"
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result = values.str.contains(pat)
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expected_dtype = "object" if any_string_dtype == "object" else "boolean"
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expected = Series(
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np.array([False, np.nan, True, True, False], dtype=np.object_),
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dtype=expected_dtype,
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)
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tm.assert_series_equal(result, expected)
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result = values.str.contains(pat, regex=False)
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expected = Series(
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np.array([False, np.nan, False, False, True], dtype=np.object_),
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dtype=expected_dtype,
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)
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tm.assert_series_equal(result, expected)
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values = Series(
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np.array(["foo", "xyz", "fooommm__foo", "mmm_"], dtype=object),
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dtype=any_string_dtype,
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)
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result = values.str.contains(pat)
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expected_dtype = np.bool_ if any_string_dtype == "object" else "boolean"
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expected = Series(np.array([False, False, True, True]), dtype=expected_dtype)
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tm.assert_series_equal(result, expected)
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# case insensitive using regex
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values = Series(
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np.array(["Foo", "xYz", "fOOomMm__fOo", "MMM_"], dtype=object),
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dtype=any_string_dtype,
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)
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result = values.str.contains("FOO|mmm", case=False)
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expected = Series(np.array([True, False, True, True]), dtype=expected_dtype)
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tm.assert_series_equal(result, expected)
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# case insensitive without regex
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result = values.str.contains("foo", regex=False, case=False)
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expected = Series(np.array([True, False, True, False]), dtype=expected_dtype)
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tm.assert_series_equal(result, expected)
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# unicode
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values = Series(
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np.array(["foo", np.nan, "fooommm__foo", "mmm_"], dtype=np.object_),
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dtype=any_string_dtype,
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)
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pat = "mmm[_]+"
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result = values.str.contains(pat)
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expected_dtype = "object" if any_string_dtype == "object" else "boolean"
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expected = Series(
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np.array([False, np.nan, True, True], dtype=np.object_), dtype=expected_dtype
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)
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tm.assert_series_equal(result, expected)
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result = values.str.contains(pat, na=False)
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expected_dtype = np.bool_ if any_string_dtype == "object" else "boolean"
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expected = Series(np.array([False, False, True, True]), dtype=expected_dtype)
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tm.assert_series_equal(result, expected)
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values = Series(
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np.array(["foo", "xyz", "fooommm__foo", "mmm_"], dtype=np.object_),
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dtype=any_string_dtype,
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)
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result = values.str.contains(pat)
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expected = Series(np.array([False, False, True, True]), dtype=expected_dtype)
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tm.assert_series_equal(result, expected)
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def test_contains_object_mixed():
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mixed = Series(
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np.array(
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["a", np.nan, "b", True, datetime.today(), "foo", None, 1, 2.0],
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dtype=object,
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)
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)
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result = mixed.str.contains("o")
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expected = Series(
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np.array(
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[False, np.nan, False, np.nan, np.nan, True, np.nan, np.nan, np.nan],
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dtype=np.object_,
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)
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)
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tm.assert_series_equal(result, expected)
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def test_contains_na_kwarg_for_object_category():
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# gh 22158
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# na for category
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values = Series(["a", "b", "c", "a", np.nan], dtype="category")
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result = values.str.contains("a", na=True)
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expected = Series([True, False, False, True, True])
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tm.assert_series_equal(result, expected)
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result = values.str.contains("a", na=False)
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expected = Series([True, False, False, True, False])
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tm.assert_series_equal(result, expected)
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# na for objects
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values = Series(["a", "b", "c", "a", np.nan])
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result = values.str.contains("a", na=True)
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expected = Series([True, False, False, True, True])
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tm.assert_series_equal(result, expected)
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result = values.str.contains("a", na=False)
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expected = Series([True, False, False, True, False])
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tm.assert_series_equal(result, expected)
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@pytest.mark.parametrize(
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"na, expected",
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[
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(None, pd.NA),
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(True, True),
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(False, False),
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(0, False),
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(3, True),
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(np.nan, pd.NA),
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],
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)
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@pytest.mark.parametrize("regex", [True, False])
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def test_contains_na_kwarg_for_nullable_string_dtype(
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nullable_string_dtype, na, expected, regex
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):
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# https://github.com/pandas-dev/pandas/pull/41025#issuecomment-824062416
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values = Series(["a", "b", "c", "a", np.nan], dtype=nullable_string_dtype)
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result = values.str.contains("a", na=na, regex=regex)
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expected = Series([True, False, False, True, expected], dtype="boolean")
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tm.assert_series_equal(result, expected)
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def test_contains_moar(any_string_dtype):
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# PR #1179
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s = Series(
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["A", "B", "C", "Aaba", "Baca", "", np.nan, "CABA", "dog", "cat"],
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dtype=any_string_dtype,
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)
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result = s.str.contains("a")
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expected_dtype = "object" if any_string_dtype == "object" else "boolean"
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expected = Series(
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[False, False, False, True, True, False, np.nan, False, False, True],
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dtype=expected_dtype,
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)
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tm.assert_series_equal(result, expected)
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result = s.str.contains("a", case=False)
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expected = Series(
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[True, False, False, True, True, False, np.nan, True, False, True],
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dtype=expected_dtype,
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)
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tm.assert_series_equal(result, expected)
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result = s.str.contains("Aa")
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expected = Series(
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[False, False, False, True, False, False, np.nan, False, False, False],
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dtype=expected_dtype,
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)
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tm.assert_series_equal(result, expected)
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result = s.str.contains("ba")
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expected = Series(
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[False, False, False, True, False, False, np.nan, False, False, False],
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dtype=expected_dtype,
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)
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tm.assert_series_equal(result, expected)
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result = s.str.contains("ba", case=False)
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expected = Series(
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[False, False, False, True, True, False, np.nan, True, False, False],
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dtype=expected_dtype,
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)
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tm.assert_series_equal(result, expected)
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def test_contains_nan(any_string_dtype):
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# PR #14171
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s = Series([np.nan, np.nan, np.nan], dtype=any_string_dtype)
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result = s.str.contains("foo", na=False)
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expected_dtype = np.bool_ if any_string_dtype == "object" else "boolean"
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expected = Series([False, False, False], dtype=expected_dtype)
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tm.assert_series_equal(result, expected)
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result = s.str.contains("foo", na=True)
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expected = Series([True, True, True], dtype=expected_dtype)
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tm.assert_series_equal(result, expected)
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result = s.str.contains("foo", na="foo")
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if any_string_dtype == "object":
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expected = Series(["foo", "foo", "foo"], dtype=np.object_)
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else:
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expected = Series([True, True, True], dtype="boolean")
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tm.assert_series_equal(result, expected)
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result = s.str.contains("foo")
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expected_dtype = "object" if any_string_dtype == "object" else "boolean"
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expected = Series([np.nan, np.nan, np.nan], dtype=expected_dtype)
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tm.assert_series_equal(result, expected)
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# --------------------------------------------------------------------------------------
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# str.startswith
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# --------------------------------------------------------------------------------------
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@pytest.mark.parametrize("dtype", [None, "category"])
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@pytest.mark.parametrize("null_value", [None, np.nan, pd.NA])
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@pytest.mark.parametrize("na", [True, False])
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def test_startswith(dtype, null_value, na):
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# add category dtype parametrizations for GH-36241
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values = Series(
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["om", null_value, "foo_nom", "nom", "bar_foo", null_value, "foo"],
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dtype=dtype,
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)
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result = values.str.startswith("foo")
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exp = Series([False, np.nan, True, False, False, np.nan, True])
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tm.assert_series_equal(result, exp)
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result = values.str.startswith("foo", na=na)
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exp = Series([False, na, True, False, False, na, True])
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tm.assert_series_equal(result, exp)
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# mixed
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mixed = np.array(
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["a", np.nan, "b", True, datetime.today(), "foo", None, 1, 2.0],
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dtype=np.object_,
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)
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rs = Series(mixed).str.startswith("f")
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xp = Series([False, np.nan, False, np.nan, np.nan, True, np.nan, np.nan, np.nan])
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tm.assert_series_equal(rs, xp)
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@pytest.mark.parametrize("na", [None, True, False])
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def test_startswith_nullable_string_dtype(nullable_string_dtype, na):
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values = Series(
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["om", None, "foo_nom", "nom", "bar_foo", None, "foo", "regex", "rege."],
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dtype=nullable_string_dtype,
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)
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result = values.str.startswith("foo", na=na)
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exp = Series(
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[False, na, True, False, False, na, True, False, False], dtype="boolean"
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)
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tm.assert_series_equal(result, exp)
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result = values.str.startswith("rege.", na=na)
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exp = Series(
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[False, na, False, False, False, na, False, False, True], dtype="boolean"
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)
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tm.assert_series_equal(result, exp)
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# --------------------------------------------------------------------------------------
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# str.endswith
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# --------------------------------------------------------------------------------------
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@pytest.mark.parametrize("dtype", [None, "category"])
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@pytest.mark.parametrize("null_value", [None, np.nan, pd.NA])
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@pytest.mark.parametrize("na", [True, False])
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def test_endswith(dtype, null_value, na):
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# add category dtype parametrizations for GH-36241
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values = Series(
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["om", null_value, "foo_nom", "nom", "bar_foo", null_value, "foo"],
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dtype=dtype,
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)
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result = values.str.endswith("foo")
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exp = Series([False, np.nan, False, False, True, np.nan, True])
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tm.assert_series_equal(result, exp)
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result = values.str.endswith("foo", na=na)
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exp = Series([False, na, False, False, True, na, True])
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tm.assert_series_equal(result, exp)
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# mixed
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mixed = np.array(
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["a", np.nan, "b", True, datetime.today(), "foo", None, 1, 2.0],
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dtype=object,
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)
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rs = Series(mixed).str.endswith("f")
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xp = Series([False, np.nan, False, np.nan, np.nan, False, np.nan, np.nan, np.nan])
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tm.assert_series_equal(rs, xp)
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@pytest.mark.parametrize("na", [None, True, False])
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def test_endswith_nullable_string_dtype(nullable_string_dtype, na):
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values = Series(
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["om", None, "foo_nom", "nom", "bar_foo", None, "foo", "regex", "rege."],
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dtype=nullable_string_dtype,
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)
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result = values.str.endswith("foo", na=na)
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exp = Series(
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[False, na, False, False, True, na, True, False, False], dtype="boolean"
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)
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tm.assert_series_equal(result, exp)
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result = values.str.endswith("rege.", na=na)
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exp = Series(
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[False, na, False, False, False, na, False, False, True], dtype="boolean"
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)
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tm.assert_series_equal(result, exp)
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# --------------------------------------------------------------------------------------
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# str.replace
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# --------------------------------------------------------------------------------------
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def test_replace(any_string_dtype):
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ser = Series(["fooBAD__barBAD", np.nan], dtype=any_string_dtype)
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result = ser.str.replace("BAD[_]*", "", regex=True)
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expected = Series(["foobar", np.nan], dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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def test_replace_max_replacements(any_string_dtype):
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ser = Series(["fooBAD__barBAD", np.nan], dtype=any_string_dtype)
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expected = Series(["foobarBAD", np.nan], dtype=any_string_dtype)
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result = ser.str.replace("BAD[_]*", "", n=1, regex=True)
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tm.assert_series_equal(result, expected)
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expected = Series(["foo__barBAD", np.nan], dtype=any_string_dtype)
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result = ser.str.replace("BAD", "", n=1, regex=False)
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tm.assert_series_equal(result, expected)
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def test_replace_mixed_object():
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ser = Series(
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["aBAD", np.nan, "bBAD", True, datetime.today(), "fooBAD", None, 1, 2.0]
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)
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result = Series(ser).str.replace("BAD[_]*", "", regex=True)
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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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def test_replace_unicode(any_string_dtype):
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ser = Series([b"abcd,\xc3\xa0".decode("utf-8")], dtype=any_string_dtype)
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expected = Series([b"abcd, \xc3\xa0".decode("utf-8")], dtype=any_string_dtype)
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result = ser.str.replace(r"(?<=\w),(?=\w)", ", ", flags=re.UNICODE, regex=True)
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tm.assert_series_equal(result, expected)
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@pytest.mark.parametrize("repl", [None, 3, {"a": "b"}])
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@pytest.mark.parametrize("data", [["a", "b", None], ["a", "b", "c", "ad"]])
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def test_replace_wrong_repl_type_raises(any_string_dtype, index_or_series, repl, data):
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# https://github.com/pandas-dev/pandas/issues/13438
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msg = "repl must be a string or callable"
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obj = index_or_series(data, dtype=any_string_dtype)
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with pytest.raises(TypeError, match=msg):
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obj.str.replace("a", repl)
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def test_replace_callable(any_string_dtype):
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# GH 15055
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ser = Series(["fooBAD__barBAD", np.nan], dtype=any_string_dtype)
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# test with callable
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repl = lambda m: m.group(0).swapcase()
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result = ser.str.replace("[a-z][A-Z]{2}", repl, n=2, regex=True)
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expected = Series(["foObaD__baRbaD", np.nan], dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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@pytest.mark.parametrize(
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"repl", [lambda: None, lambda m, x: None, lambda m, x, y=None: None]
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)
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def test_replace_callable_raises(any_string_dtype, repl):
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# GH 15055
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values = Series(["fooBAD__barBAD", np.nan], dtype=any_string_dtype)
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# test with wrong number of arguments, raising an error
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msg = (
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r"((takes)|(missing)) (?(2)from \d+ to )?\d+ "
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r"(?(3)required )positional arguments?"
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)
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with pytest.raises(TypeError, match=msg):
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values.str.replace("a", repl)
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def test_replace_callable_named_groups(any_string_dtype):
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# test regex named groups
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ser = Series(["Foo Bar Baz", np.nan], dtype=any_string_dtype)
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pat = r"(?P<first>\w+) (?P<middle>\w+) (?P<last>\w+)"
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repl = lambda m: m.group("middle").swapcase()
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result = ser.str.replace(pat, repl, regex=True)
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expected = Series(["bAR", np.nan], dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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def test_replace_compiled_regex(any_string_dtype):
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# GH 15446
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ser = Series(["fooBAD__barBAD", np.nan], dtype=any_string_dtype)
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# test with compiled regex
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pat = re.compile(r"BAD_*")
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result = ser.str.replace(pat, "", regex=True)
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expected = Series(["foobar", np.nan], dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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result = ser.str.replace(pat, "", n=1, regex=True)
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expected = Series(["foobarBAD", np.nan], dtype=any_string_dtype)
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tm.assert_series_equal(result, expected)
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def test_replace_compiled_regex_mixed_object():
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pat = re.compile(r"BAD_*")
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ser = Series(
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["aBAD", np.nan, "bBAD", True, datetime.today(), "fooBAD", None, 1, 2.0]
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)
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result = Series(ser).str.replace(pat, "", regex=True)
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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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def test_replace_compiled_regex_unicode(any_string_dtype):
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ser = Series([b"abcd,\xc3\xa0".decode("utf-8")], dtype=any_string_dtype)
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expected = Series([b"abcd, \xc3\xa0".decode("utf-8")], dtype=any_string_dtype)
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pat = re.compile(r"(?<=\w),(?=\w)", flags=re.UNICODE)
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result = ser.str.replace(pat, ", ")
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tm.assert_series_equal(result, expected)
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def test_replace_compiled_regex_raises(any_string_dtype):
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# case and flags provided to str.replace will have no effect
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|
# and will produce warnings
|
|
ser = Series(["fooBAD__barBAD__bad", np.nan], dtype=any_string_dtype)
|
|
pat = re.compile(r"BAD_*")
|
|
|
|
msg = "case and flags cannot be set when pat is a compiled regex"
|
|
|
|
with pytest.raises(ValueError, match=msg):
|
|
ser.str.replace(pat, "", flags=re.IGNORECASE)
|
|
|
|
with pytest.raises(ValueError, match=msg):
|
|
ser.str.replace(pat, "", case=False)
|
|
|
|
with pytest.raises(ValueError, match=msg):
|
|
ser.str.replace(pat, "", case=True)
|
|
|
|
|
|
def test_replace_compiled_regex_callable(any_string_dtype):
|
|
# test with callable
|
|
ser = Series(["fooBAD__barBAD", np.nan], dtype=any_string_dtype)
|
|
repl = lambda m: m.group(0).swapcase()
|
|
pat = re.compile("[a-z][A-Z]{2}")
|
|
result = ser.str.replace(pat, repl, n=2)
|
|
expected = Series(["foObaD__baRbaD", np.nan], dtype=any_string_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"regex,expected", [(True, ["bao", "bao", np.nan]), (False, ["bao", "foo", np.nan])]
|
|
)
|
|
def test_replace_literal(regex, expected, any_string_dtype):
|
|
# GH16808 literal replace (regex=False vs regex=True)
|
|
ser = Series(["f.o", "foo", np.nan], dtype=any_string_dtype)
|
|
expected = Series(expected, dtype=any_string_dtype)
|
|
result = ser.str.replace("f.", "ba", regex=regex)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
def test_replace_literal_callable_raises(any_string_dtype):
|
|
ser = Series([], dtype=any_string_dtype)
|
|
repl = lambda m: m.group(0).swapcase()
|
|
|
|
msg = "Cannot use a callable replacement when regex=False"
|
|
with pytest.raises(ValueError, match=msg):
|
|
ser.str.replace("abc", repl, regex=False)
|
|
|
|
|
|
def test_replace_literal_compiled_raises(any_string_dtype):
|
|
ser = Series([], dtype=any_string_dtype)
|
|
pat = re.compile("[a-z][A-Z]{2}")
|
|
|
|
msg = "Cannot use a compiled regex as replacement pattern with regex=False"
|
|
with pytest.raises(ValueError, match=msg):
|
|
ser.str.replace(pat, "", regex=False)
|
|
|
|
|
|
def test_replace_moar(any_string_dtype):
|
|
# PR #1179
|
|
ser = Series(
|
|
["A", "B", "C", "Aaba", "Baca", "", np.nan, "CABA", "dog", "cat"],
|
|
dtype=any_string_dtype,
|
|
)
|
|
|
|
result = ser.str.replace("A", "YYY")
|
|
expected = Series(
|
|
["YYY", "B", "C", "YYYaba", "Baca", "", np.nan, "CYYYBYYY", "dog", "cat"],
|
|
dtype=any_string_dtype,
|
|
)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = ser.str.replace("A", "YYY", case=False)
|
|
expected = Series(
|
|
[
|
|
"YYY",
|
|
"B",
|
|
"C",
|
|
"YYYYYYbYYY",
|
|
"BYYYcYYY",
|
|
"",
|
|
np.nan,
|
|
"CYYYBYYY",
|
|
"dog",
|
|
"cYYYt",
|
|
],
|
|
dtype=any_string_dtype,
|
|
)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = ser.str.replace("^.a|dog", "XX-XX ", case=False, regex=True)
|
|
expected = Series(
|
|
[
|
|
"A",
|
|
"B",
|
|
"C",
|
|
"XX-XX ba",
|
|
"XX-XX ca",
|
|
"",
|
|
np.nan,
|
|
"XX-XX BA",
|
|
"XX-XX ",
|
|
"XX-XX t",
|
|
],
|
|
dtype=any_string_dtype,
|
|
)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
def test_replace_not_case_sensitive_not_regex(any_string_dtype):
|
|
# https://github.com/pandas-dev/pandas/issues/41602
|
|
ser = Series(["A.", "a.", "Ab", "ab", np.nan], dtype=any_string_dtype)
|
|
|
|
result = ser.str.replace("a", "c", case=False, regex=False)
|
|
expected = Series(["c.", "c.", "cb", "cb", np.nan], dtype=any_string_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = ser.str.replace("a.", "c.", case=False, regex=False)
|
|
expected = Series(["c.", "c.", "Ab", "ab", np.nan], dtype=any_string_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
def test_replace_regex_default_warning(any_string_dtype):
|
|
# https://github.com/pandas-dev/pandas/pull/24809
|
|
s = Series(["a", "b", "ac", np.nan, ""], dtype=any_string_dtype)
|
|
msg = (
|
|
"The default value of regex will change from True to False in a "
|
|
"future version\\.$"
|
|
)
|
|
with tm.assert_produces_warning(FutureWarning, match=msg):
|
|
result = s.str.replace("^.$", "a")
|
|
expected = Series(["a", "a", "ac", np.nan, ""], dtype=any_string_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
@pytest.mark.parametrize("regex", [True, False, None])
|
|
def test_replace_regex_single_character(regex, any_string_dtype):
|
|
# https://github.com/pandas-dev/pandas/pull/24809
|
|
|
|
# The current behavior is to treat single character patterns as literal strings,
|
|
# even when ``regex`` is set to ``True``.
|
|
|
|
s = Series(["a.b", ".", "b", np.nan, ""], dtype=any_string_dtype)
|
|
|
|
if regex is None:
|
|
msg = re.escape(
|
|
"The default value of regex will change from True to False in a future "
|
|
"version. In addition, single character regular expressions will *not* "
|
|
"be treated as literal strings when regex=True."
|
|
)
|
|
with tm.assert_produces_warning(FutureWarning, match=msg):
|
|
result = s.str.replace(".", "a", regex=regex)
|
|
else:
|
|
result = s.str.replace(".", "a", regex=regex)
|
|
|
|
expected = Series(["aab", "a", "b", np.nan, ""], dtype=any_string_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
# --------------------------------------------------------------------------------------
|
|
# str.match
|
|
# --------------------------------------------------------------------------------------
|
|
|
|
|
|
def test_match(any_string_dtype):
|
|
# New match behavior introduced in 0.13
|
|
expected_dtype = "object" if any_string_dtype == "object" else "boolean"
|
|
|
|
values = Series(["fooBAD__barBAD", np.nan, "foo"], dtype=any_string_dtype)
|
|
result = values.str.match(".*(BAD[_]+).*(BAD)")
|
|
expected = Series([True, np.nan, False], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
values = Series(
|
|
["fooBAD__barBAD", "BAD_BADleroybrown", np.nan, "foo"], dtype=any_string_dtype
|
|
)
|
|
result = values.str.match(".*BAD[_]+.*BAD")
|
|
expected = Series([True, True, np.nan, False], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = values.str.match("BAD[_]+.*BAD")
|
|
expected = Series([False, True, np.nan, False], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
values = Series(
|
|
["fooBAD__barBAD", "^BAD_BADleroybrown", np.nan, "foo"], dtype=any_string_dtype
|
|
)
|
|
result = values.str.match("^BAD[_]+.*BAD")
|
|
expected = Series([False, False, np.nan, False], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = values.str.match("\\^BAD[_]+.*BAD")
|
|
expected = Series([False, True, np.nan, False], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
def test_match_mixed_object():
|
|
mixed = Series(
|
|
[
|
|
"aBAD_BAD",
|
|
np.nan,
|
|
"BAD_b_BAD",
|
|
True,
|
|
datetime.today(),
|
|
"foo",
|
|
None,
|
|
1,
|
|
2.0,
|
|
]
|
|
)
|
|
result = Series(mixed).str.match(".*(BAD[_]+).*(BAD)")
|
|
expected = Series(
|
|
[True, np.nan, True, np.nan, np.nan, False, np.nan, np.nan, np.nan]
|
|
)
|
|
assert isinstance(result, Series)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
def test_match_na_kwarg(any_string_dtype):
|
|
# GH #6609
|
|
s = Series(["a", "b", np.nan], dtype=any_string_dtype)
|
|
|
|
result = s.str.match("a", na=False)
|
|
expected_dtype = np.bool_ if any_string_dtype == "object" else "boolean"
|
|
expected = Series([True, False, False], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = s.str.match("a")
|
|
expected_dtype = "object" if any_string_dtype == "object" else "boolean"
|
|
expected = Series([True, False, np.nan], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
def test_match_case_kwarg(any_string_dtype):
|
|
values = Series(["ab", "AB", "abc", "ABC"], dtype=any_string_dtype)
|
|
result = values.str.match("ab", case=False)
|
|
expected_dtype = np.bool_ if any_string_dtype == "object" else "boolean"
|
|
expected = Series([True, True, True, True], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
# --------------------------------------------------------------------------------------
|
|
# str.fullmatch
|
|
# --------------------------------------------------------------------------------------
|
|
|
|
|
|
def test_fullmatch(any_string_dtype):
|
|
# GH 32806
|
|
ser = Series(
|
|
["fooBAD__barBAD", "BAD_BADleroybrown", np.nan, "foo"], dtype=any_string_dtype
|
|
)
|
|
result = ser.str.fullmatch(".*BAD[_]+.*BAD")
|
|
expected_dtype = "object" if any_string_dtype == "object" else "boolean"
|
|
expected = Series([True, False, np.nan, False], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
def test_fullmatch_na_kwarg(any_string_dtype):
|
|
ser = Series(
|
|
["fooBAD__barBAD", "BAD_BADleroybrown", np.nan, "foo"], dtype=any_string_dtype
|
|
)
|
|
result = ser.str.fullmatch(".*BAD[_]+.*BAD", na=False)
|
|
expected_dtype = np.bool_ if any_string_dtype == "object" else "boolean"
|
|
expected = Series([True, False, False, False], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
def test_fullmatch_case_kwarg(any_string_dtype):
|
|
ser = Series(["ab", "AB", "abc", "ABC"], dtype=any_string_dtype)
|
|
expected_dtype = np.bool_ if any_string_dtype == "object" else "boolean"
|
|
|
|
expected = Series([True, False, False, False], dtype=expected_dtype)
|
|
|
|
result = ser.str.fullmatch("ab", case=True)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
expected = Series([True, True, False, False], dtype=expected_dtype)
|
|
|
|
result = ser.str.fullmatch("ab", case=False)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = ser.str.fullmatch("ab", flags=re.IGNORECASE)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
# --------------------------------------------------------------------------------------
|
|
# str.findall
|
|
# --------------------------------------------------------------------------------------
|
|
|
|
|
|
def test_findall(any_string_dtype):
|
|
ser = Series(["fooBAD__barBAD", np.nan, "foo", "BAD"], dtype=any_string_dtype)
|
|
result = ser.str.findall("BAD[_]*")
|
|
expected = Series([["BAD__", "BAD"], np.nan, [], ["BAD"]])
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
def test_findall_mixed_object():
|
|
ser = Series(
|
|
[
|
|
"fooBAD__barBAD",
|
|
np.nan,
|
|
"foo",
|
|
True,
|
|
datetime.today(),
|
|
"BAD",
|
|
None,
|
|
1,
|
|
2.0,
|
|
]
|
|
)
|
|
|
|
result = ser.str.findall("BAD[_]*")
|
|
expected = Series(
|
|
[
|
|
["BAD__", "BAD"],
|
|
np.nan,
|
|
[],
|
|
np.nan,
|
|
np.nan,
|
|
["BAD"],
|
|
np.nan,
|
|
np.nan,
|
|
np.nan,
|
|
]
|
|
)
|
|
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
# --------------------------------------------------------------------------------------
|
|
# str.find
|
|
# --------------------------------------------------------------------------------------
|
|
|
|
|
|
def test_find(any_string_dtype):
|
|
ser = Series(
|
|
["ABCDEFG", "BCDEFEF", "DEFGHIJEF", "EFGHEF", "XXXX"], dtype=any_string_dtype
|
|
)
|
|
expected_dtype = np.int64 if any_string_dtype == "object" else "Int64"
|
|
|
|
result = ser.str.find("EF")
|
|
expected = Series([4, 3, 1, 0, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
expected = np.array([v.find("EF") for v in np.array(ser)], dtype=np.int64)
|
|
tm.assert_numpy_array_equal(np.array(result, dtype=np.int64), expected)
|
|
|
|
result = ser.str.rfind("EF")
|
|
expected = Series([4, 5, 7, 4, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
expected = np.array([v.rfind("EF") for v in np.array(ser)], dtype=np.int64)
|
|
tm.assert_numpy_array_equal(np.array(result, dtype=np.int64), expected)
|
|
|
|
result = ser.str.find("EF", 3)
|
|
expected = Series([4, 3, 7, 4, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
expected = np.array([v.find("EF", 3) for v in np.array(ser)], dtype=np.int64)
|
|
tm.assert_numpy_array_equal(np.array(result, dtype=np.int64), expected)
|
|
|
|
result = ser.str.rfind("EF", 3)
|
|
expected = Series([4, 5, 7, 4, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
expected = np.array([v.rfind("EF", 3) for v in np.array(ser)], dtype=np.int64)
|
|
tm.assert_numpy_array_equal(np.array(result, dtype=np.int64), expected)
|
|
|
|
result = ser.str.find("EF", 3, 6)
|
|
expected = Series([4, 3, -1, 4, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
expected = np.array([v.find("EF", 3, 6) for v in np.array(ser)], dtype=np.int64)
|
|
tm.assert_numpy_array_equal(np.array(result, dtype=np.int64), expected)
|
|
|
|
result = ser.str.rfind("EF", 3, 6)
|
|
expected = Series([4, 3, -1, 4, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
expected = np.array([v.rfind("EF", 3, 6) for v in np.array(ser)], dtype=np.int64)
|
|
tm.assert_numpy_array_equal(np.array(result, dtype=np.int64), expected)
|
|
|
|
|
|
def test_find_bad_arg_raises(any_string_dtype):
|
|
ser = Series([], dtype=any_string_dtype)
|
|
with pytest.raises(TypeError, match="expected a string object, not int"):
|
|
ser.str.find(0)
|
|
|
|
with pytest.raises(TypeError, match="expected a string object, not int"):
|
|
ser.str.rfind(0)
|
|
|
|
|
|
def test_find_nan(any_string_dtype):
|
|
ser = Series(
|
|
["ABCDEFG", np.nan, "DEFGHIJEF", np.nan, "XXXX"], dtype=any_string_dtype
|
|
)
|
|
expected_dtype = np.float64 if any_string_dtype == "object" else "Int64"
|
|
|
|
result = ser.str.find("EF")
|
|
expected = Series([4, np.nan, 1, np.nan, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = ser.str.rfind("EF")
|
|
expected = Series([4, np.nan, 7, np.nan, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = ser.str.find("EF", 3)
|
|
expected = Series([4, np.nan, 7, np.nan, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = ser.str.rfind("EF", 3)
|
|
expected = Series([4, np.nan, 7, np.nan, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = ser.str.find("EF", 3, 6)
|
|
expected = Series([4, np.nan, -1, np.nan, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
result = ser.str.rfind("EF", 3, 6)
|
|
expected = Series([4, np.nan, -1, np.nan, -1], dtype=expected_dtype)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
# --------------------------------------------------------------------------------------
|
|
# str.translate
|
|
# --------------------------------------------------------------------------------------
|
|
|
|
|
|
def test_translate(index_or_series, any_string_dtype):
|
|
obj = index_or_series(
|
|
["abcdefg", "abcc", "cdddfg", "cdefggg"], dtype=any_string_dtype
|
|
)
|
|
table = str.maketrans("abc", "cde")
|
|
result = obj.str.translate(table)
|
|
expected = index_or_series(
|
|
["cdedefg", "cdee", "edddfg", "edefggg"], dtype=any_string_dtype
|
|
)
|
|
tm.assert_equal(result, expected)
|
|
|
|
|
|
def test_translate_mixed_object():
|
|
# Series with non-string values
|
|
s = Series(["a", "b", "c", 1.2])
|
|
table = str.maketrans("abc", "cde")
|
|
expected = Series(["c", "d", "e", np.nan])
|
|
result = s.str.translate(table)
|
|
tm.assert_series_equal(result, expected)
|
|
|
|
|
|
# --------------------------------------------------------------------------------------
|
|
|
|
|
|
def test_flags_kwarg(any_string_dtype):
|
|
data = {
|
|
"Dave": "dave@google.com",
|
|
"Steve": "steve@gmail.com",
|
|
"Rob": "rob@gmail.com",
|
|
"Wes": np.nan,
|
|
}
|
|
data = Series(data, dtype=any_string_dtype)
|
|
|
|
pat = r"([A-Z0-9._%+-]+)@([A-Z0-9.-]+)\.([A-Z]{2,4})"
|
|
|
|
result = data.str.extract(pat, flags=re.IGNORECASE, expand=True)
|
|
assert result.iloc[0].tolist() == ["dave", "google", "com"]
|
|
|
|
result = data.str.match(pat, flags=re.IGNORECASE)
|
|
assert result[0]
|
|
|
|
result = data.str.fullmatch(pat, flags=re.IGNORECASE)
|
|
assert result[0]
|
|
|
|
result = data.str.findall(pat, flags=re.IGNORECASE)
|
|
assert result[0][0] == ("dave", "google", "com")
|
|
|
|
result = data.str.count(pat, flags=re.IGNORECASE)
|
|
assert result[0] == 1
|
|
|
|
msg = "has match groups"
|
|
with tm.assert_produces_warning(UserWarning, match=msg):
|
|
result = data.str.contains(pat, flags=re.IGNORECASE)
|
|
assert result[0]
|
|
|