Discord Python bot 问题

Question

我希望我的机器人接受输入！pi，然后它说“请输入圆的半径”然后接受用户的输入，然后它应该从半径计算圆的周长

@client.event
async def on_message(message):
  channel = message.channel
  if message.author == client.user:
      return
  msg = message.content
  
  def check(m):
    return m.content == 'hello' and m.channel == channel
      
# checks for words in the message, if it finds words that correlate with the list it prints a random message from the other list
  if any(word in msg for word in key_words):
    await message.channel.send(random.choice(List_1))
# sends as photo of a rat from the rat list
  if msg.startswith("!ratrep"):
      while x == 1:
          await message.channel.send(random.choice(rat))

  if msg.startswith("!rat"):
      await message.channel.send(random.choice(rat))

# calculates the circumference of a cricle with the radius
  if msg.startswith("!pi"):
      await message.channel.send("please input the radius of the circle")
       
      msg = await client.wait_for("message", check=check)
      z = 2*3.14*int(float(message.content))
      await message.channel.send(z)

没有错误发生，输入号码后没有消息