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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 _copy_from(self, rhs):
 """Copy all data from rhs into this instance, handles usage count"""

        self._manager = rhs._manager
        self._rlist = type(rhs._rlist)(rhs._rlist)
        self._region = rhs._region
        self._ofs = rhs._ofs
        self._size = rhs._size

        for region in self._rlist:
            region.increment_client_count()

        if self._region is not None:
            self._region.increment_client_count()