Program to Find GCD of two Numbers in python

"Program to Find GCD of two Numbers"
print ("Program to find the GCD of two numbers")
a = int(input ("Enter the first Number: "))
b = int(input ("Enter the second Number: "))
a1=int(a)
b1=int(b)
while not (a1 == 0 or b1 == 0) :
        temp1= a1%b1
        a1,b1 = b1 , temp1
     
if a == 0:
    print ("The GCD of Give two number", (a,b) , "is : ", b1)
else :
    print ("The GCD of Give two number" ,(a, b)," is :" ,a1 )