比如：
data = self.rfile.read(ssize)
self.wfile.write("y")
潜在下面的错误，由于socket连接断开，write就会有错误，是应该用try except
包起来，还是其他什么手段处理？（比如c中检察返回值），我不了解try
except，不敢随意使用try except，怕影响性能。请大家指教一下，谢谢！

Traceback (most recent call last):
File "/home/forum/Python-2.5/Lib/SocketServer.py", line 222, in
handle_request
self.process_request(request, client_address)
File "/home/forum/Python-2.5/Lib/SocketServer.py", line 241, in
process_request
self.finish_request(request, client_address)
File "/home/forum/Python-2.5/Lib/SocketServer.py", line 254, in
finish_request
self.RequestHandlerClass(request, client_address, self)
File "/home/forum/Python-2.5/Lib/SocketServer.py", line 521, in __init__
self.handle()
File "baoba.py", line 86, in handle
self.wfile.write("y")
File "/home/forum/Python-2.5/Lib/socket.py", line 261, in write
self.flush()
File "/home/forum/Python-2.5/Lib/socket.py", line 248, in flush
self._sock.sendall(buffer)
error: (32, 'Broken pipe')