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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def hashi(self, key, replica=0):
 """Returns a ketama compatible hash from the given key. """

        dh = self._listbytes(md5(str(key).encode('utf-8')).digest())
        rd = replica * 4
        return (
            (dh[3 + rd] << 24) | (dh[2 + rd] << 16) |
            (dh[1 + rd] << 8) | dh[0 + rd])