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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 _finalize(self):
        "Computes _fobj, the completed hash."
        hobj = self._hobj
        for hashname in self._algorithms[1:]:
            fobj = hashlib.new(hashname)
            fobj.update(hobj.digest())
            hobj = fobj
        self._fobj = hobj