functions in python

[fade23]

i have been isked to write a function in that recive to sequences ?

i have write in that way but have wrong syntax can any one help me
that is my code
def f (*a,*o):
l = tuple();
for it in a.items():
for y in o.items():
if (y==it):
l.append(y);
return l;


def test():
m= (a,b ,c);
v= (p, i ,n);
print (f(v, m));


the error that i accept it is

fade@ubuntu:~/Desktop$ python simple.py
File "simple.py", line 3
def f (*a,*o):
^
SyntaxError: invalid syntax

plz i got crazy of that i need any help