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Annotate *args/**kwargs based on the signature of another class/function #17119
Description
Feature
It is a common pattern to inherit a Parent class and call its __init__() using *args and **kwargs as below.
class Parent:
def __init__(self, a: str, b: int = 0):
print(a, b)
class Child(Parent):
def __init__(self, c: float, *args, **kwargs):
super().__init__(*args, **kwargs)
print(c)Is there a way of annotating the above *args and **kwargs without rewriting Parent's signature (i.e. no TypedDict + Unpack)?
I would find the following UX very convenient:
class Parent:
def __init__(self, a: str, b: int = 0):
print(a, b)
class Child(Parent):
def __init__(self, c: float, *args: Parent.args, **kwargs: Parent.kwargs):
super().__init__(*args: Parent.args, **kwargs: Parent.kwargs)
print(c)
Activity
Hnasar commentedon Apr 12, 2024
You can use the
copy_typesuggestion in python/typing#1079, but in general this isn't supported by the python's typing capabilities right now. I think this isn't applicable for a mypy issue.karb94 commentedon Apr 12, 2024
Thank you for the link. Very interesting discussion. Closing as this is not possible at this time.