Finding the lowest common multiple with python

lcm.py

def gcd(arg1, arg2):
    while arg2 > 0: arg1,arg2 = arg2, arg1 % arg2
    return arg1
def contest1(arg1, arg2):
    result = arg1 * arg2 / gcd(arg1,arg2)
    return result

num1 = int(raw_input('Enter the first number:\n'))
num2 = int(raw_input('Enter the second number:\n'))

print 'the lcm is %s '% contest1(num1, num2)