count in bits manually

count_24_bits.py

def test(counter=[0], bits=[], stop=24):
    if len(bits) == stop:
        print(*bits, '     ', counter[0])
        counter[0] += 1
        return
    bits.append(0)
    test(counter, bits)
    bits[-1] = 1
    test(counter, bits)
    bits.pop()