newfile.py

def gcd(m,n):
    l = []
    for i in range (1,m+1):
        if (m%i) == 0 :
            l.append(i)

    p = []
    for j in range (1,n+1):
        if (n%j) == 0 :
            p.append(j)
    k = []
    for h in l :
        if h in p :
            k.append(h)

    return (k[-1])