def __mul__(self, other):
if isinstance(other, Vector):
if other._num_cols != 1:
return ValueError(f'{other} should be general Vector')
else:
return sum(x * y for x, y in zip(self._values, other._values))
elif isinstance(other, Matrix):
return Matrix.__mul__(self, other)
def __mul__(self, other):
if isinstance(other, Vector):
if other._num_rows != 1:
raise ValueError(f'{other} should be transpose Vector')
else:
return sum(x * y for x, y in zip(self._values, other._values))
elif isinstance(other, Matrix):
return Matrix.__mul__(self, other)