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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 dtype(self):
 """The data type of this space. This is only well defined if all subspaces have the same dtype. Raises ------ AttributeError If any of the subspaces does not implement `dtype` or if the dtype of the subspaces does not match. """

        dtypes = [space.dtype for space in self.spaces]

        if all(dtype == dtypes[0] for dtype in dtypes):
            return dtypes[0]
        else:
            raise AttributeError("`dtype`'s of subspaces not equal")