This is my python code for printing an absolute number. My function is returning type None. I am not getting what I have done wrong. Please help me.

def n(num):if num<0:return (num*-1)no = input("Enter a number: ")
print "Absolute Value is: "
print n(no)

def n(num):if num<0:return (num*-1)else:return numno = input("Enter a number: ")
print "Absolute Value is: "
print n(no)

writing an else statement will return num >= 0

Thank You :)