def visit_ifexp(self, node, parent):
        """visit a IfExp node by returning a fresh instance of it"""
        newnode = nodes.IfExp(node.lineno, node.col_offset, parent)
        newnode.postinit(
            self.visit(node.test, newnode),
            self.visit(node.body, newnode),
            self.visit(node.orelse, newnode),
        )
        return newnode
visit a IfExp node by returning a fresh instance of it