在检索uuid值时出现以下错误

TypeError：“ str”对象不可调用

//checks for the status of menu
let menuFull = false;

$(document).ready(function () {
    //Handle navigation button
    let navButton = document.getElementById("nav_button");
    navButton.addEventListener('click',function (event) {
        toggleMenu();
    })
});

let toggleMenu = function () {
    //Check for the status here
    let menuArea = document.getElementById("nav_container");
    let containerArea = document.getElementsByClassname("body_container")[0];

    if (menuFull) {
        menuArea.style.left = "-11.5%";
        menuFull = false;
        console.log("I am in true area!");
    } else {
        menuArea.style.left = "0%";
        containerArea.style.left = "18.5%";
        menuFull = true;
        console.log("I am in false area!")
    }

    console.log(menuFull);
}

import uuid

hash_val = uuid.uuid4().hex()

print(hash_val)

任何人都可以帮助解决此问题吗？

谢谢