Add tz{utc,offset}.fromutc() (#6360)

Author: srittau

stubs/python-dateutil/dateutil/tz/tz.pyi

@@ -1,10 +1,11 @@
 import datetime
-from typing import IO, Any, Text, Union
+from typing import IO, Any, Text, TypeVar, Union
 
 from ..relativedelta import relativedelta
 from ._common import _tzinfo as _tzinfo, enfold as enfold, tzname_in_python2 as tzname_in_python2, tzrangebase as tzrangebase
 
 _FileObj = Union[str, Text, IO[str], IO[Text]]
+_DT = TypeVar("_DT", bound=datetime.datetime)
 
 ZERO: datetime.timedelta
 EPOCH: datetime.datetime
@@ -15,6 +16,7 @@ class tzutc(datetime.tzinfo):
     def dst(self, dt: datetime.datetime | None) -> datetime.timedelta | None: ...
     def tzname(self, dt: datetime.datetime | None) -> str: ...
     def is_ambiguous(self, dt: datetime.datetime | None) -> bool: ...
+    def fromutc(self, dt: _DT) -> _DT: ...
     def __eq__(self, other): ...
     __hash__: Any
     def __ne__(self, other): ...
@@ -26,6 +28,7 @@ class tzoffset(datetime.tzinfo):
     def dst(self, dt: datetime.datetime | None) -> datetime.timedelta | None: ...
     def is_ambiguous(self, dt: datetime.datetime | None) -> bool: ...
     def tzname(self, dt: datetime.datetime | None) -> str: ...
+    def fromutc(self, dt: _DT) -> _DT: ...
     def __eq__(self, other): ...
     __hash__: Any
     def __ne__(self, other): ...