Python 3.12 `def f[T: Generics](...)`

[leaver2000]

Python 3.12 `def f[T: Generics](...)`

[RedGuy12]

Duplicate of #4254

[leaver2000]

# this is case that prompted the Issue
def get[
    T: np.generic
](
    name: Vars = "VIL", *, file: str = "latest", datetime: datetime.datetime | None = None, dtype: type[T] = np.float64
) -> Array[Nd[Y, X], T]:

# save 2 lines of code
def get[T: np.generic](
    name: Vars = "VIL", *, file: str = "latest", datetime: datetime.datetime | None = None, dtype: type[T] = np.float64
) -> Array[Nd[Y, X], T]: