Get a list/tuple/dict of the arguments passed to a function?

Question

Given the following function:

def foo(a, b, c):
    pass

How would one obtain a list/tuple/dict/etc of the arguments passed in, wit

Answer 1

You've specified the parameters in the header?

Why don't you simply use that same info in the body?

def foo(a, b, c):
   params = [a, b, c]

What have I missed?

Answer 2

You can use the inspect module:

def foo(x):
    return x

inspect.getargspec(foo)
Out[23]: ArgSpec(args=['x'], varargs=None, keywords=None, defaults=None)

This is a duplicate of this and this.