龙卷风websockets ioloop异常

Question

我试图从龙卷风websockets文档工作得到你好，世界的例子。我对龙卷风很陌生，对websockets完全陌生。我指定了以下处理程序，直接从文档：

class EchoWebSocket(tornado.websocket.WebSocketHandler): 
    def open(self): 
     print "WebSocket opened" 

    def on_message(self, message): 
     self.write_message(u"You said: " + message) 

    def on_close(self): 
     print "WebSocket closed" 

，并使用

var ws = new WebSocket("ws://localhost:6665/websocket"); 
ws.onopen = function() { 
    ws.send("Hello, world"); 
}; 
ws.onmessage = function (evt) { 
    alert(evt.data); 
}; 

也直接从文档从JavaScript调用它。我立即打了三个例外：

[E 111123 17:45:54 iostream:233] Uncaught exception, closing connection. 
    Traceback (most recent call last): 
     File "/local/lib/python2.5/site-packages/tornado/iostream.py", line 230, in _run_callback 
     callback(*args, **kwargs) 
     File "/local/lib/python2.5/site-packages/tornado/stack_context.py", line 173, in wrapped 
     callback(*args, **kwargs) 
     File "/local/lib/python2.5/site-packages/tornado/httpserver.py", line 353, in _on_headers 
     self.request_callback(self._request) 
     File "/local/lib/python2.5/site-packages/tornado/web.py", line 1182, in __call__ 
     handler = spec.handler_class(self, request, **spec.kwargs) 
    TypeError: default __new__ takes no parameters 
[E 111123 17:45:54 iostream:221] Uncaught exception, closing connection. 
    Traceback (most recent call last): 
     File "/local/lib/python2.5/site-packages/tornado/iostream.py", line 199, in _handle_events 
     self._handle_read() 
     File "/local/lib/python2.5/site-packages/tornado/iostream.py", line 258, in _handle_read 
     if self._read_from_buffer(): 
     File "/local/lib/python2.5/site-packages/tornado/iostream.py", line 325, in _read_from_buffer 
     self._consume(loc + delimiter_len)) 
     File "/local/lib/python2.5/site-packages/tornado/iostream.py", line 230, in _run_callback 
     callback(*args, **kwargs) 
     File "/local/lib/python2.5/site-packages/tornado/stack_context.py", line 173, in wrapped 
     callback(*args, **kwargs) 
     File "/local/lib/python2.5/site-packages/tornado/httpserver.py", line 353, in _on_headers 
     self.request_callback(self._request) 
     File "/local/lib/python2.5/site-packages/tornado/web.py", line 1182, in __call__ 
     handler = spec.handler_class(self, request, **spec.kwargs) 
    TypeError: default __new__ takes no parameters 
[E 111123 17:45:54 ioloop:281] Exception in I/O handler for fd 4 
    Traceback (most recent call last): 
     File "/local/lib/python2.5/site-packages/tornado/ioloop.py", line 269, in start 
     self._handlers[fd](fd, events) 
     File "/local/lib/python2.5/site-packages/tornado/stack_context.py", line 173, in wrapped 
     callback(*args, **kwargs) 
     File "/local/lib/python2.5/site-packages/tornado/iostream.py", line 199, in _handle_events 
     self._handle_read() 
     File "/local/lib/python2.5/site-packages/tornado/iostream.py", line 258, in _handle_read 
     if self._read_from_buffer(): 
     File "/local/lib/python2.5/site-packages/tornado/iostream.py", line 325, in _read_from_buffer 
       self._consume(loc + delimiter_len)) 
     File "/local/lib/python2.5/site-packages/tornado/iostream.py", line 230, in _run_callback 
     callback(*args, **kwargs) 
     File "/local/lib/python2.5/site-packages/tornado/stack_context.py", line 173, in wrapped 
     callback(*args, **kwargs) 
     File "/local/lib/python2.5/site-packages/tornado/httpserver.py", line 353, in _on_headers 
     self.request_callback(self._request) 
     File "/local/lib/python2.5/site-packages/tornado/web.py", line 1182, in __call__ 
     handler = spec.handler_class(self, request, **spec.kwargs) 
    TypeError: default __new__ takes no parameters 

我承认，无法正确解析，我很紧张，陷入tornado.web。有什么明显的我做错了吗？我正在使用龙卷风1.2.1。

Answer 1

它可能与您使用的Python的旧版本（来自日志2.5）有关。 的object.__init__和object.__new__行为改变了几年前：http://svn.python.org/view?revision=54539&view=revision

而且，我相信这是你的问题一个错字：你的意思是“龙卷风2.1.1”而不是“龙卷风1.2.1”，对不对？