discord.py 返回带有 ValueError 的输入：int() 的无效文字，基数为 10：'hey'

Question

I'm making a discord bot that will take input and store it in a int variable for later writing it into a text file:

@client.command()
async def createproject(ctx):

    def check(m):
        return m.author == ctx.message.author
    
    await ctx.send("This is a test")
    msg = await client.wait_for("message", check = check, timeout = 30)
    desc = int(msg.content)
    await ctx.send(desc)

The bot succesfully sends the "This is a test message" and it had ran flawlessly untill this error

The error code specified is:

File "c:/Users/data/Desktop/discord bot/main.py", line 101, in createproject
    desc = int(msg.content)
ValueError: invalid literal for int() with base 10: 'hey'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\data\AppData\Local\Programs\Python\Python38-32\lib\site-packages\discord\ext\commands\bot.py", line 903, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Users\data\AppData\Local\Programs\Python\Python38-32\lib\site-packages\discord\ext\commands\core.py", line 855, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "C:\Users\data\AppData\Local\Programs\Python\Python38-32\lib\site-packages\discord\ext\commands\core.py", line 94, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: 
ValueError: invalid literal for int() with base 10: 'hey'

Thank you for your help.

Answer 1

In line 9, you tried to change the msg.content to integer with desc = int(msg.content) . But if a message includes a non numeric letter, then this error will raise. If you just want to get integer messages, you can use str.isdigit function. You can check it:

msg = await client.wait_for("message", check = check, timeout = 30)
if msg.isdigit():
    desc = int(msg.content)

So your code should seem like:

@client.command()
async def createproject(ctx):

    def check(m):
        return m.author == ctx.message.author
    
    await ctx.send("This is a test")
    msg = await client.wait_for("message", check = check, timeout = 30)
    if msg.isdigit():
        desc = int(msg.content)
    else:
        await ctx.send('Please type numbers only')