gh-460: added 'TimestampSeries' in TimedeltaSeries in series.pyi (#464)

* added 'TimestampSeries' in TimedeltaSeries in series.pyi

* added 'pd.Timestamp' as last argument to check

* changed the black version in pyproject.toml

Author: ramvikrams

pandas-stubs/core/series.pyi

@@ -1773,10 +1773,12 @@ class TimedeltaSeries(Series[Timedelta]):
     @overload  # type: ignore[override]
     def __add__(self, other: Period) -> PeriodSeries: ...
     @overload
-    def __add__(self, other: Timestamp | DatetimeIndex) -> TimestampSeries: ...
+    def __add__(
+        self, other: Timestamp | TimestampSeries | DatetimeIndex
+    ) -> TimestampSeries: ...
     @overload
     def __add__(self, other: Timedelta | np.timedelta64) -> TimedeltaSeries: ...
-    def __radd__(self, pther: Timestamp | TimestampSeries) -> TimestampSeries: ...  # type: ignore[override]
+    def __radd__(self, other: Timestamp | TimestampSeries) -> TimestampSeries: ...  # type: ignore[override]
     @overload  # type: ignore[override]
     def __mul__(
         self, other: TimestampSeries | np.timedelta64 | Timedelta | TimedeltaSeries

pyproject.toml

@@ -45,7 +45,7 @@ pandas = "1.5.2"
 typing-extensions = ">=4.2.0"
 matplotlib = ">=3.5.1"
 pre-commit = ">=2.19.0"
-black = ">=22.8.0"
+black = ">=22.12.0"
 isort = ">=5.10.1"
 openpyxl = ">=3.0.10"
 tables = { version = ">=3.7.0", python = "<3.11" }

tests/test_timefuncs.py

@@ -1054,3 +1054,10 @@ def test_timedelta64_and_arithmatic_operator() -> None:
         assert_type((s1 * td), Never)  # pyright: ignore
         assert_type((s1 / td), Never)  # pyright: ignore
         assert_type((s3 * td), Never)  # pyright: ignore
+
+
+def test_timedeltaseries_add_timestampseries() -> None:
+    tds = pd.Series(pd.timedelta_range(start="1 day", periods=10))
+    tss = pd.Series(pd.date_range(start="2012-01-01", periods=10, freq="W-MON"))
+    plus = tds + tss
+    check(assert_type(plus, "TimestampSeries"), pd.Series, pd.Timestamp)