Why I'm getting this error? The bot is supposed to assign the role with ID=899279907216031744 ,-CodePudding

I'm getting this error below when My Message is something like 003-UG-CSE-2023 or 123-PG-CSE-2024

Ignoring exception in on_message Traceback (most recent call last): File "C:\Users\ACER\AppData\Roaming\Python\Python39\site-packages\discord\client.py", line 343, in _run_event await coro(*args, **kwargs) File "C:\Users\ACER\Desktop\pika bot\pika.py", line 52, in on_message if cont: UnboundLocalError: local variable 'cont' referenced before assignment

import os
import discord
import discord.ext.commands as commands
import dotenv
import random

dotenv.load_dotenv()

bot = commands.Bot(command_prefix='$')

@bot.event
async def on_ready():
    print('I am online')
    print(bot.user.name)
    print(bot.user.id)
    print('-----')

@bot.event
async def on_message(message):
    member = message.author
    role = discord.utils.get(member.guild.roles, id="899279907216031744")
    splits = message.content.split("-")

    # it's not in the wanted format
    if len(splits) != 4:
        # return or something else
        cont = False

    # check if first is a number within range <1, 999>
    try:
        if int(splits[0]) <= 0 and int(splits[0]) >= 1000:
            cont = True
    except ValueError:
        cont = False

    # check if second is one of the options
    if splits[1] not in ["UG", "PG", "D"]:
        cont = False

    # check if third is one of the options
    if splits[2] not in ["CSAI","CSE","ECAI","ECE","IT","MAE","EEE","CE","PD","AE","CH","CE","EE","ME","ED","MV","ER","QT","RAS","AI","CS","CP","BE","CHE","CHEM","CG","CC","VLSI","EV","DES"]:
        cont = False

    # check if fourth is a number from range <2022 ...>
    try:
        if int(splits[3]) <= 2022:
            cont = False
    except ValueError:
        cont = False

    # it fits all the criteria
    if cont:    
        await discord.Member.add_roles(member, role)



bot.run(os.getenv('TOKEN'))

Please lemme know if you found the mistake so I can fix the issue

CodePudding user response：

Try/except blocks have their own scope for variables. To use variables set inside a try/except block, you need to add an 'else' or 'finally' after except (where else runs only if there is no error and finally runs either way)

CodePudding user response：

The Error definitely shows, that the problem is laying on "if cont:", I would try to add cont to a global.

@bot.event
async def on_message(message):
    global cont #Added cont to global
    member = message.author
    role = discord.utils.get(member.guild.roles, id="899279907216031744")
    splits = message.content.split("-")