A better functools (more signature-preserving than current impl, and with more features)

[smarie]

functools is a great module to manipulate functions. However the created functions are not user-friendly :

• functools.partial does not provide user-friendly name, help/signature, and docstring
• functools.wraps does not truly preserve signature. See details here

Besides there is no counterpart to partial (adding parameters). Nor is there any user-friendly way to generalize to any signature modification or dynamic method creation.

I created makefun to cover all of these issues. I relied on dynamic code compilation (the trick that decorator uses). But it is probably less efficient than embedding it in the python framework itself. So a PEP would probably be useful here, what do you think ?

Related stackoverflow posts:

• on partial.
• on wraps