+15
-14
lines changedFilter options
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-14
lines changed Original file line number Diff line number Diff line change
@@ -954,6 +954,7 @@ Conversion
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Strings
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^^^^^^^
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- Bug in :func:`pandas.api.dtypes.is_string_dtype` that would not return ``True`` for :class:`StringDtype` (:issue:`15585`)
957 +
- Bug in converting string dtypes to "datetime64[ns]" or "timedelta64[ns]" incorrectly raising ``TypeError`` (:issue:`36153`)
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-
958 959 959 960
Interval
@@ -55,9 +55,11 @@
55 55 56 56
from pandas.core.dtypes.cast import maybe_cast_to_extension_array
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from pandas.core.dtypes.common import (
58 +
is_datetime64_dtype,
58 59
is_dtype_equal,
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is_list_like,
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is_scalar,
62 +
is_timedelta64_dtype,
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pandas_dtype,
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)
63 65
from pandas.core.dtypes.dtypes import ExtensionDtype
@@ -580,6 +582,16 @@ def astype(self, dtype: AstypeArg, copy: bool = True) -> ArrayLike:
580 582
cls = dtype.construct_array_type()
581 583
return cls._from_sequence(self, dtype=dtype, copy=copy)
582 584 585 +
elif is_datetime64_dtype(dtype):
586 +
from pandas.core.arrays import DatetimeArray
587 + 588 +
return DatetimeArray._from_sequence(self, dtype=dtype, copy=copy)
589 + 590 +
elif is_timedelta64_dtype(dtype):
591 +
from pandas.core.arrays import TimedeltaArray
592 + 593 +
return TimedeltaArray._from_sequence(self, dtype=dtype, copy=copy)
594 + 583 595
return np.array(self, dtype=dtype, copy=copy)
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def isna(self) -> np.ndarray | ExtensionArraySupportsAnyAll:
@@ -73,17 +73,7 @@ def test_setitem_with_scalar_string(dtype):
73 73
tm.assert_extension_array_equal(arr, expected)
74 74 75 75 76 -
def test_astype_roundtrip(dtype, request):
77 -
if dtype.storage == "pyarrow":
78 -
reason = "ValueError: Could not convert object to NumPy datetime"
79 -
mark = pytest.mark.xfail(reason=reason, raises=ValueError)
80 -
request.node.add_marker(mark)
81 -
else:
82 -
mark = pytest.mark.xfail(
83 -
reason="GH#36153 casting from StringArray to dt64 fails", raises=ValueError
84 -
)
85 -
request.node.add_marker(mark)
86 - 76 +
def test_astype_roundtrip(dtype):
87 77
ser = pd.Series(pd.date_range("2000", periods=12))
88 78
ser[0] = None
89 79
@@ -454,9 +454,7 @@ class TestAstypeString:
454 454
def test_astype_string_to_extension_dtype_roundtrip(
455 455
self, data, dtype, request, nullable_string_dtype
456 456
):
457 -
if dtype == "boolean" or (
458 -
dtype in ("datetime64[ns]", "timedelta64[ns]") and NaT in data
459 -
):
457 +
if dtype == "boolean" or (dtype == "timedelta64[ns]" and NaT in data):
460 458
mark = pytest.mark.xfail(
461 459
reason="TODO StringArray.astype() with missing values #GH40566"
462 460
)
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