I have a function original with specified arguments, their types and a doc-string.

How can I define a function new that what that it would basically call original but override a argument with some A_DEFAULT value. E.g. new(x) == original(A_DEFAULT, x).

The most important part is that resulting new

• should have original signature but without a argument
• keep the original doc string
• both signature and doc string should be visible from IDE

The goal is to make those kind of partial functions without copying the original doc-strings and signatures explicitly.

Any ideas how it can be done? (even if you have some hacky idea)

import functools


A_DEFAULT  = ...


def original(a: int, b: str):
    "description"
    return a + b


# `new` should have in IDE tooltips and type checks:
# -  __doc__ = "description"
# - signature = (b: int)
# new(x) = original(A_DEFAULT, x)
new = ...