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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 _call(self, x, out=None):
 """Multiply ``x`` and write to ``out`` if given."""

        if out is None:
            return x * self.multiplicand
        elif not self.__range_is_field:
            if self.__domain_is_field:
                out.lincomb(x, self.multiplicand)
            else:
                out.assign(self.multiplicand * x)
        else:
            raise ValueError('can only use `out` with `LinearSpace` range')