from typing import Callable, TypeVar
from typing_extensions import ParamSpec
input = ParamSpec("input")
output = TypeVar("output")
[docs]
def qcodes_abstractmethod(funcobj: Callable[input, output]) -> Callable[input, output]:
"""
A decorator indicating abstract methods.
This is heavily inspired by the decorator of the same name in
the ABC standard library. But we make our own version because
we actually want to allow the class with the abstract method to be
instantiated and we will use this property to detect if the
method is abstract and should be overwritten.
"""
funcobj.__qcodes_is_abstract_method__ = True # type: ignore[attr-defined]
return funcobj