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GH1352 Add passing a dict with integer for pd.to_datetime #1353

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Merged
merged 3 commits into from
Aug 29, 2025
Merged

GH1352 Add passing a dict with integer for pd.to_datetime #1353

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c6398b3
GH1352 Add passing a dict with integer for pd.to_datetime
loicdiridollou Aug 28, 2025
fba129c
GH1352 Fix nightly
loicdiridollou Aug 28, 2025
3be28c9
GH1352 PR Feedback
loicdiridollou Aug 29, 2025
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4 changes: 3 additions & 1 deletion pandas-stubs/core/tools/datetimes.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,9 @@ DatetimeScalar: TypeAlias = Scalar | datetime | np.datetime64 | date

DatetimeScalarOrArrayConvertible: TypeAlias = DatetimeScalar | ArrayConvertible

DatetimeDictArg: TypeAlias = list[Scalar] | tuple[Scalar, ...] | AnyArrayLike
DatetimeDictArg: TypeAlias = (
list[int | str] | tuple[int | str, ...] | AnyArrayLike | int | str
)

class YearMonthDayDict(TypedDict, total=True):
year: DatetimeDictArg
Expand Down
20 changes: 15 additions & 5 deletions tests/test_scalars.py
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Expand Up @@ -24,6 +24,7 @@
from pandas._typing import TimeUnit

from tests import (
PD_LTE_23,
TYPE_CHECKING_INVALID_USAGE,
check,
np_1darray,
Expand All @@ -44,13 +45,17 @@
TimedeltaSeries,
TimestampSeries,
)

else:
TimedeltaSeries: TypeAlias = pd.Series
TimestampSeries: TypeAlias = pd.Series
PeriodSeries: TypeAlias = pd.Series
OffsetSeries: TypeAlias = pd.Series

if not PD_LTE_23:
from pandas.errors import Pandas4Warning # type: ignore[attr-defined] # pyright: ignore # isort: skip
else:
Pandas4Warning: TypeAlias = FutureWarning # type: ignore[no-redef]


def test_interval() -> None:
interval_i = pd.Interval(0, 1, closed="left")
Expand Down Expand Up @@ -369,10 +374,15 @@ def test_interval_cmp():

def test_timedelta_construction() -> None:
check(assert_type(pd.Timedelta(1, "W"), pd.Timedelta), pd.Timedelta)
with pytest_warns_bounded(FutureWarning, "'w' is deprecated", lower="2.3.99"):
with pytest_warns_bounded(
Pandas4Warning, # should be Pandas4Warning but only exposed starting pandas 3.0.0
"'w' is deprecated and will",
lower="2.3.99",
upper="3.0.99",
):
check(assert_type(pd.Timedelta(1, "w"), pd.Timedelta), pd.Timedelta)
check(assert_type(pd.Timedelta(1, "D"), pd.Timedelta), pd.Timedelta)
with pytest_warns_bounded(FutureWarning, "'d' is deprecated", lower="2.3.99"):
with pytest_warns_bounded(Pandas4Warning, "'d' is deprecated", lower="2.3.99"):
check(assert_type(pd.Timedelta(1, "d"), pd.Timedelta), pd.Timedelta)
check(assert_type(pd.Timedelta(1, "days"), pd.Timedelta), pd.Timedelta)
check(assert_type(pd.Timedelta(1, "day"), pd.Timedelta), pd.Timedelta)
Expand Down Expand Up @@ -406,10 +416,10 @@ def test_timedelta_construction() -> None:
check(assert_type(pd.Timedelta(1, "nanosecond"), pd.Timedelta), pd.Timedelta)

check(assert_type(pd.Timedelta("1 W"), pd.Timedelta), pd.Timedelta)
with pytest_warns_bounded(FutureWarning, "'w' is deprecated", lower="2.3.99"):
with pytest_warns_bounded(Pandas4Warning, "'w' is deprecated", lower="2.3.99"):
check(assert_type(pd.Timedelta("1 w"), pd.Timedelta), pd.Timedelta)
check(assert_type(pd.Timedelta("1 D"), pd.Timedelta), pd.Timedelta)
with pytest_warns_bounded(FutureWarning, "'d' is deprecated", lower="2.3.99"):
with pytest_warns_bounded(Pandas4Warning, "'d' is deprecated", lower="2.3.99"):
check(assert_type(pd.Timedelta("1 d"), pd.Timedelta), pd.Timedelta)
check(assert_type(pd.Timedelta("1 days"), pd.Timedelta), pd.Timedelta)
check(assert_type(pd.Timedelta("1 day"), pd.Timedelta), pd.Timedelta)
Expand Down
37 changes: 34 additions & 3 deletions tests/test_timefuncs.py
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Expand Up @@ -1108,10 +1108,10 @@ def test_index_types_to_numpy() -> None:

def test_to_timedelta_units() -> None:
check(assert_type(pd.to_timedelta(1, "W"), pd.Timedelta), pd.Timedelta)
with pytest_warns_bounded(FutureWarning, "'w' is deprecated", lower="2.3.99"):
with pytest_warns_bounded(Pandas4Warning, "'w' is deprecated", lower="2.3.99"):
check(assert_type(pd.to_timedelta(1, "w"), pd.Timedelta), pd.Timedelta)
check(assert_type(pd.to_timedelta(1, "D"), pd.Timedelta), pd.Timedelta)
with pytest_warns_bounded(FutureWarning, "'d' is deprecated", lower="2.3.99"):
with pytest_warns_bounded(Pandas4Warning, "'d' is deprecated", lower="2.3.99"):
check(assert_type(pd.to_timedelta(1, "d"), pd.Timedelta), pd.Timedelta)
check(assert_type(pd.to_timedelta(1, "days"), pd.Timedelta), pd.Timedelta)
check(assert_type(pd.to_timedelta(1, "day"), pd.Timedelta), pd.Timedelta)
Expand Down Expand Up @@ -1334,6 +1334,37 @@ def test_to_datetime_series() -> None:
check(assert_type(pd.to_datetime(d), "TimestampSeries"), pd.Series)
check(assert_type(pd.to_datetime(d_ex), "TimestampSeries"), pd.Series)

# GH1352
ts = pd.date_range("2023-10-01", "2024-05-01", freq="1h")
check(
assert_type(
pd.to_datetime(
{
"year": ts.year,
"month": ts.month,
"day": "1",
}
),
"TimestampSeries",
),
pd.Series,
pd.Timestamp,
)
check(
assert_type(
pd.to_datetime(
{
"year": [2024, "2023"],
"month": 4,
"day": 1,
}
),
"TimestampSeries",
),
pd.Series,
pd.Timestamp,
)


def test_to_datetime_array() -> None:
check(assert_type(pd.to_datetime([1, 2, 3]), pd.DatetimeIndex), pd.DatetimeIndex)
Expand Down Expand Up @@ -1854,7 +1885,7 @@ def test_timestamp_to_list_add() -> None:
tslist = list(pd.to_datetime(["2022-01-01", "2022-01-02"]))
check(assert_type(tslist, list[pd.Timestamp]), list, pd.Timestamp)
sseries = pd.Series(tslist)
with pytest_warns_bounded(FutureWarning, "'d' is deprecated", lower="2.3.99"):
with pytest_warns_bounded(Pandas4Warning, "'d' is deprecated", lower="2.3.99"):
sseries + pd.Timedelta(1, "d")

check(
Expand Down
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