hamming.py

while True:
    f = [int(i) for i in list(input())]
    a = [f[i * 2] for i in range(len(f) // 2)]
    b = [f[1], f[2], f[5], f[6], f[9], f[10]]
    c = [f[i] for i in range(3, 7)]
    c.append(f[11])
    d = [f[i] for i in range(7, 12)]

    ans = 0
    was = 0
    wasshit = False

    if (sum(a) - f[0]) % 2 != f[0]:
        ans += 0
        was += 1
        wasshit = True
    if (sum(b) - f[1]) % 2 != f[1]:
        ans += 1
        was += 1
        wasshit = True
    if (sum(c) - f[3]) % 2 != f[3]:
        ans += 3
        was += 1
        wasshit = True
    if (sum(d) - f[7]) % 2 != f[7]:
        ans += 7
        was += 1
        wasshit = True

    print(f)
    if wasshit is True:
        f[ans] = (f[ans] + 1) % 2

    print(ans + was)
    
    f.pop(0)
    f.pop(0)
    f.pop(1)
    f.pop(4)

    print(f)
    print(''.join(str(i) for i in f))
    # print(a, b, c, d, sep='\n')
    # print('',
    #       (sum(a) - f[0]) % 2 == f[0],
    #       (sum(b) - f[1]) % 2 == f[1],
    #       (sum(c) - f[3]) % 2 == f[3],
    #       (sum(d) - f[7]) % 2 == f[7],
    #       sep='\n')