def visit_assign(self, node, parent):
        """visit a Assign node by returning a fresh instance of it"""
        type_annotation = self.check_type_comment(node)
        newnode = nodes.Assign(node.lineno, node.col_offset, parent)
        newnode.postinit(
            targets=[self.visit(child, newnode) for child in node.targets],
            value=self.visit(node.value, newnode),
            type_annotation=type_annotation,
        )
        return newnode
visit a Assign node by returning a fresh instance of it