Python 如何使用Discord bot命令为用户提供角色？

我想做一个命令，给用户一个角色，而不提及他们，但我不知道怎么做

代码：

错误：

PS C:\Users\Fred\Desktop\Cyberpapera2.0> & C:/Python/Python37/python.exe c:/Users/Fred/Desktop/Cyberpapera2.0/bot.py
Ignoring exception in command blog:
Traceback (most recent call last):
  File "C:\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 79, in wrapped
    ret = await coro(*args, **kwargs)
  File "c:/Users/Fred/Desktop/Cyberpapera2.0/bot.py", line 632, in blog
    await member.add_roles(role)
AttributeError: 'NoneType' object has no attribute 'add_roles'

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

Traceback (most recent call last):
  File "C:\Python\Python37\lib\site-packages\discord\ext\commands\bot.py", line 863, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 728, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "C:\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 88, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: 'NoneType' object has no attribute 'add_roles'

---

您的错误是由于

member

的默认值为

None

当在没有参数的情况下调用命令时，例如通过

！博客

，

成员

将是

无

，因此当到达行，

等待成员。添加角色（角色）

时，会出现

属性错误

，告诉您

'NoneType'对象没有属性“添加角色”

您应该处理默认值大小写，并检查

成员何时为None

---

或者，如果您不想在未传递

成员时处理该命令，则可以完全删除默认值并处理。
如果调用方未指定角色，则哪个用户应获得该角色？@PatrickHaugh any user
PS C:\Users\Fred\Desktop\Cyberpapera2.0> & C:/Python/Python37/python.exe c:/Users/Fred/Desktop/Cyberpapera2.0/bot.py
Ignoring exception in command blog:
Traceback (most recent call last):
  File "C:\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 79, in wrapped
    ret = await coro(*args, **kwargs)
  File "c:/Users/Fred/Desktop/Cyberpapera2.0/bot.py", line 632, in blog
    await member.add_roles(role)
AttributeError: 'NoneType' object has no attribute 'add_roles'

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

Traceback (most recent call last):
  File "C:\Python\Python37\lib\site-packages\discord\ext\commands\bot.py", line 863, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 728, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "C:\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 88, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: 'NoneType' object has no attribute 'add_roles'