python - 如何检查某人是否在列表中

Question

代码：

@commands.command()
async def allow(self, ctx, member: discord.Member=None):
    if member != None:
        if ctx.author.id in f'{allowedID}':
            with open('owner.json', 'a') as f:
                f.write(member.id)
    else:
        firstArg = (" ").join(content)
        user = bot.get_user(firstArg)
        if ctx.author.id in f'{allowedID}':
            if user != None:
                if user != user.Bot:
                    with open('owner.json', 'a') as f:
                        f.write(user.id)

错误：

discord.ext.commands.errors.CommandInvokeError: Command raised an exception: TypeError: 'in <string>' requires string as left operand, not int

我想检查是否有人在 json 中，但我总是出现这个错误，但我不知道如何修复它

标签： pythonpython-3.xdiscorddiscord.pydiscord.py-rewrite

Answer 1

您不能检查字符串中的整数，显然它不存在。在您的代码中更改ctx.author.id in f'{allowedID}'为。str(ctx.author.id) in f'{allowedID}'

>> 2 in 'name'
--------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-23-24283495773c> in <module>
----> 1 2 in 'name'
TypeError: 'in <string>' requires string as left operand, not int

>> str(2) in 'name'
False