Iterative way to calculate the GCD of two numbers.

gcdIter.py

def gcdIter(a,b):
    x = min(a,b)
    for i in range(min(a,b)):
        if a%x==0 and b%x==0:
            break
        else:
            x -= 1
    return x
print('This is a program to calculate the GCD of two integers.')
a = int(raw_input('Enter first number: '))
b = int(raw_input('Enter second number: '))
z = gcdIter(a,b)

print('The GCD of the two numbers is: ' + str(z))