def test_endswith_nullable_string_dtype(nullable_string_dtype, na):
values = Series(
[
"om", None, "foo_nom", "nom", "bar_foo", None, "foo", "regex",
"rege."
],
dtype=nullable_string_dtype,
)
with tm.maybe_produces_warning(
PerformanceWarning,
nullable_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = values.str.endswith("foo", na=na)
exp = Series([False, na, False, False, True, na, True, False, False],
dtype="boolean")
tm.assert_series_equal(result, exp)
with tm.maybe_produces_warning(
PerformanceWarning,
nullable_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = values.str.endswith("rege.", na=na)
exp = Series([False, na, False, False, False, na, False, False, True],
dtype="boolean")
tm.assert_series_equal(result, exp)
def test_nunique_null(null_obj, index_or_series_obj):
obj = index_or_series_obj
if not allow_na_ops(obj):
pytest.skip("type doesn't allow for NA operations")
elif isinstance(obj, pd.MultiIndex):
pytest.skip(f"MultiIndex can't hold '{null_obj}'")
values = obj._values
values[0:2] = null_obj
klass = type(obj)
repeated_values = np.repeat(values, range(1, len(values) + 1))
obj = klass(repeated_values, dtype=obj.dtype)
if isinstance(obj, pd.CategoricalIndex):
assert obj.nunique() == len(obj.categories)
assert obj.nunique(dropna=False) == len(obj.categories) + 1
else:
with tm.maybe_produces_warning(
PerformanceWarning,
pa_version_under2p0 and str(index_or_series_obj.dtype) == "string[pyarrow]",
):
num_unique_values = len(obj.unique())
with tm.maybe_produces_warning(
PerformanceWarning,
pa_version_under2p0 and str(index_or_series_obj.dtype) == "string[pyarrow]",
):
assert obj.nunique() == max(0, num_unique_values - 1)
with tm.maybe_produces_warning(
PerformanceWarning,
pa_version_under2p0 and str(index_or_series_obj.dtype) == "string[pyarrow]",
):
assert obj.nunique(dropna=False) == max(0, num_unique_values)
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,
)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
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)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
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)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
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_isin(dtype, fixed_now_ts):
s = pd.Series(["a", "b", None], dtype=dtype)
with tm.maybe_produces_warning(PerformanceWarning, dtype == "pyarrow"
and pa_version_under2p0):
result = s.isin(["a", "c"])
expected = pd.Series([True, False, False])
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(PerformanceWarning, dtype == "pyarrow"
and pa_version_under2p0):
result = s.isin(["a", pd.NA])
expected = pd.Series([True, False, True])
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(PerformanceWarning, dtype == "pyarrow"
and pa_version_under2p0):
result = s.isin([])
expected = pd.Series([False, False, False])
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(PerformanceWarning, dtype == "pyarrow"
and pa_version_under2p0):
result = s.isin(["a", fixed_now_ts])
expected = pd.Series([True, False, False])
tm.assert_series_equal(result, expected)
def test_contains_moar(any_string_dtype):
# PR #1179
s = Series(
["A", "B", "C", "Aaba", "Baca", "", np.nan, "CABA", "dog", "cat"],
dtype=any_string_dtype,
)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = s.str.contains("a")
expected_dtype = "object" if any_string_dtype == "object" else "boolean"
expected = Series(
[False, False, False, True, True, False, np.nan, False, False, True],
dtype=expected_dtype,
)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
result = s.str.contains("a", case=False)
expected = Series(
[True, False, False, True, True, False, np.nan, True, False, True],
dtype=expected_dtype,
)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = s.str.contains("Aa")
expected = Series(
[False, False, False, True, False, False, np.nan, False, False, False],
dtype=expected_dtype,
)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = s.str.contains("ba")
expected = Series(
[False, False, False, True, False, False, np.nan, False, False, False],
dtype=expected_dtype,
)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
result = s.str.contains("ba", case=False)
expected = Series(
[False, False, False, True, True, False, np.nan, True, False, False],
dtype=expected_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)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
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)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
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_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)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
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)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = values.str.match(".*BAD[_]+.*BAD")
expected = Series([True, True, np.nan, False], dtype=expected_dtype)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
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)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = values.str.match("^BAD[_]+.*BAD")
expected = Series([False, False, np.nan, False], dtype=expected_dtype)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = values.str.match("\\^BAD[_]+.*BAD")
expected = Series([False, True, np.nan, False], dtype=expected_dtype)
tm.assert_series_equal(result, expected)
def test_unique(index_or_series_obj):
obj = index_or_series_obj
obj = np.repeat(obj, range(1, len(obj) + 1))
with tm.maybe_produces_warning(
PerformanceWarning,
pa_version_under2p0 and str(index_or_series_obj.dtype) == "string[pyarrow]",
):
result = obj.unique()
# dict.fromkeys preserves the order
unique_values = list(dict.fromkeys(obj.values))
if isinstance(obj, pd.MultiIndex):
expected = pd.MultiIndex.from_tuples(unique_values)
expected.names = obj.names
tm.assert_index_equal(result, expected, exact=True)
elif isinstance(obj, pd.Index) and obj._is_backward_compat_public_numeric_index:
expected = NumericIndex(unique_values, dtype=obj.dtype)
tm.assert_index_equal(result, expected, exact=True)
elif isinstance(obj, pd.Index):
expected = pd.Index(unique_values, dtype=obj.dtype)
if is_datetime64tz_dtype(obj.dtype):
expected = expected.normalize()
tm.assert_index_equal(result, expected, exact=True)
else:
expected = np.array(unique_values)
tm.assert_numpy_array_equal(result, expected)
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.")
pyarrow_warn = any_string_dtype == "string[pyarrow]" and pa_version_under4p0
with tm.assert_produces_warning(
FutureWarning, match=msg,
raise_on_extra_warnings=not pyarrow_warn):
result = s.str.replace(".", "a", regex=regex)
else:
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = s.str.replace(".", "a", regex=regex)
expected = Series(["aab", "a", "b", np.nan, ""], dtype=any_string_dtype)
tm.assert_series_equal(result, expected)
def test_replace_compiled_regex(any_string_dtype):
# GH 15446
ser = Series(["fooBAD__barBAD", np.nan], dtype=any_string_dtype)
# test with compiled regex
pat = re.compile(r"BAD_*")
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
result = ser.str.replace(pat, "", regex=True)
expected = Series(["foobar", np.nan], dtype=any_string_dtype)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
result = ser.str.replace(pat, "", n=1, regex=True)
expected = Series(["foobarBAD", np.nan], dtype=any_string_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)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
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)
def test_replace_compiled_regex_unicode(any_string_dtype):
ser = Series([b"abcd,\xc3\xa0".decode("utf-8")], dtype=any_string_dtype)
expected = Series([b"abcd, \xc3\xa0".decode("utf-8")],
dtype=any_string_dtype)
pat = re.compile(r"(?<=\w),(?=\w)", flags=re.UNICODE)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
result = ser.str.replace(pat, ", ")
tm.assert_series_equal(result, expected)
def test_nunique(index_or_series_obj):
obj = index_or_series_obj
obj = np.repeat(obj, range(1, len(obj) + 1))
with tm.maybe_produces_warning(
PerformanceWarning,
pa_version_under2p0 and str(index_or_series_obj.dtype) == "string[pyarrow]",
):
expected = len(obj.unique())
assert obj.nunique(dropna=False) == expected
def test_replace_max_replacements(any_string_dtype):
ser = Series(["fooBAD__barBAD", np.nan], dtype=any_string_dtype)
expected = Series(["foobarBAD", np.nan], dtype=any_string_dtype)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = ser.str.replace("BAD[_]*", "", n=1, regex=True)
tm.assert_series_equal(result, expected)
expected = Series(["foo__barBAD", np.nan], dtype=any_string_dtype)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = ser.str.replace("BAD", "", n=1, regex=False)
tm.assert_series_equal(result, expected)
def test_dropna_array(self, data_missing):
with tm.maybe_produces_warning(
PerformanceWarning,
pa_version_under6p0
and data_missing.dtype.storage == "pyarrow",
):
result = data_missing.dropna()
expected = data_missing[[1]]
self.assert_extension_array_equal(result, expected)
def test_replace_callable_named_groups(any_string_dtype):
# test regex named groups
ser = Series(["Foo Bar Baz", np.nan], dtype=any_string_dtype)
pat = r"(?P<first>\w+) (?P<middle>\w+) (?P<last>\w+)"
repl = lambda m: m.group("middle").swapcase()
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
result = ser.str.replace(pat, repl, regex=True)
expected = Series(["bAR", np.nan], dtype=any_string_dtype)
tm.assert_series_equal(result, expected)
def test_strip_lstrip_rstrip_args(any_string_dtype, method, exp):
ser = Series(["xxABCxx", "xx BNSD", "LDFJH xx"], dtype=any_string_dtype)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = getattr(ser.str, method)("x")
expected = Series(exp, dtype=any_string_dtype)
tm.assert_series_equal(result, expected)
def test_strip_lstrip_rstrip(any_string_dtype, method, exp):
ser = Series([" aa ", " bb \n", np.nan, "cc "], dtype=any_string_dtype)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = getattr(ser.str, method)()
expected = Series(exp, dtype=any_string_dtype)
tm.assert_series_equal(result, expected)
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)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = ser.str.replace("f.", "ba", regex=regex)
tm.assert_series_equal(result, expected)
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}")
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
result = ser.str.replace(pat, repl, n=2)
expected = Series(["foObaD__baRbaD", np.nan], dtype=any_string_dtype)
tm.assert_series_equal(result, expected)
def test_replace_callable_raises(any_string_dtype, repl):
# GH 15055
values = Series(["fooBAD__barBAD", np.nan], dtype=any_string_dtype)
# test with wrong number of arguments, raising an error
msg = (r"((takes)|(missing)) (?(2)from \d+ to )?\d+ "
r"(?(3)required )positional arguments?")
with pytest.raises(TypeError, match=msg):
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
values.str.replace("a", repl)
def test_fullmatch_na_kwarg(any_string_dtype):
ser = Series(["fooBAD__barBAD", "BAD_BADleroybrown", np.nan, "foo"],
dtype=any_string_dtype)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
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_match_na_kwarg(any_string_dtype):
# GH #6609
s = Series(["a", "b", np.nan], dtype=any_string_dtype)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
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)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
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_contains_nan(any_string_dtype):
# PR #14171
s = Series([np.nan, np.nan, np.nan], dtype=any_string_dtype)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = s.str.contains("foo", na=False)
expected_dtype = np.bool_ if any_string_dtype == "object" else "boolean"
expected = Series([False, False, False], dtype=expected_dtype)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = s.str.contains("foo", na=True)
expected = Series([True, True, True], dtype=expected_dtype)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = s.str.contains("foo", na="foo")
if any_string_dtype == "object":
expected = Series(["foo", "foo", "foo"], dtype=np.object_)
else:
expected = Series([True, True, True], dtype="boolean")
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = s.str.contains("foo")
expected_dtype = "object" if any_string_dtype == "object" else "boolean"
expected = Series([np.nan, np.nan, np.nan], dtype=expected_dtype)
tm.assert_series_equal(result, expected)
def test_len(any_string_dtype):
ser = Series(
["foo", "fooo", "fooooo", np.nan, "fooooooo", "foo\n", "あ"],
dtype=any_string_dtype,
)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = ser.str.len()
expected_dtype = "float64" if any_string_dtype == "object" else "Int64"
expected = Series([3, 4, 6, np.nan, 8, 4, 1], dtype=expected_dtype)
tm.assert_series_equal(result, expected)
def test_contains_na_kwarg_for_nullable_string_dtype(nullable_string_dtype, na,
expected, regex):
# https://github.com/pandas-dev/pandas/pull/41025#issuecomment-824062416
values = Series(["a", "b", "c", "a", np.nan], dtype=nullable_string_dtype)
with tm.maybe_produces_warning(
PerformanceWarning,
nullable_string_dtype == "string[pyarrow]" and pa_version_under4p0
and regex,
):
result = values.str.contains("a", na=na, regex=regex)
expected = Series([True, False, False, True, expected], dtype="boolean")
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)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = ser.str.fullmatch("ab", case=True)
tm.assert_series_equal(result, expected)
expected = Series([True, True, False, False], dtype=expected_dtype)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
result = ser.str.fullmatch("ab", case=False)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(PerformanceWarning,
any_string_dtype == "string[pyarrow]"):
result = ser.str.fullmatch("ab", flags=re.IGNORECASE)
tm.assert_series_equal(result, expected)
def test_pipe_failures(any_string_dtype):
# #2119
ser = Series(["A|B|C"], dtype=any_string_dtype)
result = ser.str.split("|")
expected = Series([["A", "B", "C"]], dtype=object)
tm.assert_series_equal(result, expected)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under4p0,
):
result = ser.str.replace("|", " ", regex=False)
expected = Series(["A B C"], dtype=any_string_dtype)
tm.assert_series_equal(result, expected)
def test_flags_kwarg(any_string_dtype):
data = {
"Dave": "*****@*****.**",
"Steve": "*****@*****.**",
"Rob": "*****@*****.**",
"Wes": np.nan,
}
data = Series(data, dtype=any_string_dtype)
pat = r"([A-Z0-9._%+-]+)@([A-Z0-9.-]+)\.([A-Z]{2,4})"
using_pyarrow = any_string_dtype == "string[pyarrow]"
result = data.str.extract(pat, flags=re.IGNORECASE, expand=True)
assert result.iloc[0].tolist() == ["dave", "google", "com"]
with tm.maybe_produces_warning(PerformanceWarning, using_pyarrow):
result = data.str.match(pat, flags=re.IGNORECASE)
assert result[0]
with tm.maybe_produces_warning(PerformanceWarning, using_pyarrow):
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,
raise_on_extra_warnings=not using_pyarrow):
result = data.str.contains(pat, flags=re.IGNORECASE)
assert result[0]
def test_ismethods(method, expected, any_string_dtype):
ser = Series(["A", "b", "Xy", "4", "3A", "", "TT", "55", "-", " "],
dtype=any_string_dtype)
expected_dtype = "bool" if any_string_dtype == "object" else "boolean"
expected = Series(expected, dtype=expected_dtype)
with tm.maybe_produces_warning(
PerformanceWarning,
any_string_dtype == "string[pyarrow]" and pa_version_under2p0
and method == "isspace",
):
result = getattr(ser.str, method)()
tm.assert_series_equal(result, expected)
# compare with standard library
expected = [getattr(item, method)() for item in ser]
assert list(result) == expected