sendLine赢得'；t发送整数（Twisted Python）

我正在使用Twisted库用Python编写一个MUD。我目前正试图通过sendLine方法将整数发送到LineReceiver模块。但是，每当我尝试发送整数时，在运行程序时会收到以下错误消息：

Unhandled Error
Traceback (most recent call last):
  File "C:\Python27\lib\site-packages\twisted\python\log.py", line 84, in
thLogger
    return callWithContext({"system": lp}, func, *args, **kw)
  File "C:\Python27\lib\site-packages\twisted\python\log.py", line 69, in
thContext
    return context.call({ILogContext: newCtx}, func, *args, **kw)
  File "C:\Python27\lib\site-packages\twisted\python\context.py", line 118
allWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "C:\Python27\lib\site-packages\twisted\python\context.py", line 81,
llWithContext
    return func(*args,**kw)
--- <exception caught here> ---
  File "C:\Python27\lib\site-packages\twisted\internet\selectreactor.py",
46, in _doReadOrWrite
    why = getattr(selectable, method)()
  File "C:\Python27\lib\site-packages\twisted\internet\tcp.py", line 460,
ead
    rval = self.protocol.dataReceived(data)
  File "C:\Python27\lib\site-packages\twisted\protocols\basic.py", line 56
dataReceived
    why = self.lineReceived(line)
  File "server.py", line 37, in lineReceived
    self.sendLine(level)
  File "C:\Python27\lib\site-packages\twisted\protocols\basic.py", line 62
sendLine
    return self.transport.write(line + self.delimiter)
exceptions.TypeError: unsupported operand type(s) for +: 'int' and 'str'

所以。。。发送字符串：

self.sendLine(str(SomeVarWhichIsANumber))

---

我试过了，但没用。然而，在你建议这样做之后，我又尝试了第二次，由于一些奇怪的原因，它可以工作。当然它不发送整数。它发送。。。线。。。

self.sendLine(str(SomeVarWhichIsANumber))