NameError? Its says chBracketBal2 is not defined

Question

I want to know what is wrong with my code, I tried running it it says NameError. I already defined chBracketBal2 on line two. Can someone please help me Im really confused?

from stack import LinkedStack

def chBracketBal2 (exp, begList, endList):
    stk = LinkedStack()
    for ch in exp:
        if ch in begList: 
            stk.push(ch)
        elif ch in endList:
            if stk.isEmpty():
                return False
            chFromStack = stk.pop()
            for i in range (len(begList)):
                if ch == begList [i] and chFromStack != endList [i]:
                    return False
    return stk.isEmpty()

string = "[]{}"
begList = ["[","{","("]
endList = ["]","}",")"]


print (chBracketsBal2(exp, begList, endList))

Error_Image

Answer 1

If you are going to use JWT, then you can use local storage to persist if the user is authenticated or not.

For example: after performing an api call

    const handleSubmit = async e => {
  e.preventDefault();
  const user = { username, password };
  // send the username and password to the server
  const response = await axios.post(
    "http://your-api/api/login",
    user
  );
  // set the state of the user
  setUser(response.data)
  // store the user in localStorage
  localStorage.setItem('user', response.data)
  console.log(response.data)
};

And you can get the user like this:

 useEffect(() => {
    const loggedInUser = localStorage.getItem("user");
    if (loggedInUser) {
      const foundUser = JSON.parse(loggedInUser);
      setUser(foundUser);
    }
  }, []);