How to get method parameter names?

Question

Given the Python function:

def a_method(arg1, arg2):
    pass

How can I extract the number and names of the arguments. I.e., given that I h

Answer 1

To update a little bit Brian's answer, there is now a nice backport of inspect.signature that you can use in older python versions: funcsigs. So my personal preference would go for

try:  # python 3.3+
    from inspect import signature
except ImportError:
    from funcsigs import signature

def aMethod(arg1, arg2):
    pass

sig = signature(aMethod)
print(sig)

For fun, if you're interested in playing with Signature objects and even creating functions with random signatures dynamically you can have a look at my makefun project.