def make_bin(list):
    with open('test.bin', 'wb') as f:
        bit_string = ''
        for i in range(len(list)):
            bit_string += bitstring.Bits(bin=bin(int(list[i])))
        bit_string.tofile(f)

    decoded = bitstring.ConstBitStream(filename='test.bin')
    return decoded.read('bin')