default argument values qns

[micklee74 at hotmail.com]

hi
i have declared a function like this:

def aFunction ( arg1 , arg2 = 0):
         ....
         print type(arg2)

when i try to print the type of arg2, it gives me 'str' type..why is it
not integer type, since i have
declared it as 0 ??
thanks