def copy(self, space=None, name=None):
        """Make a copy of itself and return it."""
        return Cells(space=space, name=name, formula=self.formula)
def copy(self, space=None, name=None):
        """Make a copy of itself and return it."""
        return Cells(space=space, name=name, formula=self.formula)
Make a copy of itself and return it.