sparse_vector_class.py 文件源码

def __div__(self, other):
        """Element by element division."""
        if isinstance(other, numpy.ndarray):
            rv = SparseVector(max(self.n, other.shape[0]), {})
            for k in self.values.keys():
                rv[k] = self[k] / other[k]
            return rv
        elif isSparseVector(other):
            rv = SparseVector(max(self.n, other.n), {})
            for k in filter(self.values.has_key, other.values.keys()):
                rv[k] = self[k] / other[k]
            return rv
        elif operator.isNumberType(other):
            rv = SparseVector(self.n, {})
            for k in self.values.keys():
                rv[k] = self[k] / other
            return rv
        else:
            raise TypeError("Cannot multiply with SparseVector")