python - 使用Python打印400空消息代码中的变量输出

Question

问题:

我正在尝试为 Discord 编写一个机器人，以便获取一个变量并将其作为消息发送。例如，“a”设置为 42，我希望机器人在聊天中打印“The number is 42 {author name}”:

a = 32

if message.content.startswith('!gap'):
    msg = print('a'.format(message))
    await client.send_message(message.channel, msg)

错误:

Ignoring exception in on_message
Traceback (most recent call last):
  File "C:\Users\trevo\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\client.py", line 307, in _run_event
    yield from getattr(self, event)(*args, **kwargs)
  File "C:\Users\trevo\Desktop\dcbot\reply.py", line 16, in on_message
    await client.send_message(message.channel, msg)
  File "C:\Users\trevo\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\client.py", line 1152, in send_message
    data = yield from self.http.send_message(channel_id, content, guild_id=guild_id, tts=tts, embed=embed)
  File "C:\Users\trevo\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\http.py", line 200, in request
    raise HTTPException(r, data)
discord.errors.HTTPException: BAD REQUEST (status code: 400): Cannot send an empty message

我很欣赏解释!

Answer 1

您希望 msg 是一个字符串，但如果您尝试一下:

>>> msg = print("anything at all")
>>> repr(msg)
None

只需删除 print 调用即可。