Is there a way to define macro-like code to use inside many functions which handle the same data (arguments of the same nature with the same name)? I have many function like “f” below (almost the same interface, they do different things, on the same kind of data). And I have to repeat the same argument validation code for each one.

def f(arg1, arg2, ...):
    # validation code
        # it checks and eventually change arg1, arg2, etc.
    # function code

Is there a way to define a “validation_macro” and then do something like this?

def f(arg1, arg2, ...):
    # expand validation_macro
    # function code