centos and python2.7 run error

[didichuxing2]

[root@XXXXXXXXXXXXXX]# python proxy2.py
Traceback (most recent call last):
File "proxy2.py", line 386, in
test()
File "proxy2.py", line 378, in test
httpd = ServerClass(server_address, HandlerClass)
File "/usr/lib64/python2.7/SocketServer.py", line 419, in init
self.server_bind()
File "/usr/lib64/python2.7/BaseHTTPServer.py", line 108, in server_bind
SocketServer.TCPServer.server_bind(self)
File "/usr/lib64/python2.7/SocketServer.py", line 430, in server_bind
self.socket.bind(self.server_address)
File "/usr/lib64/python2.7/socket.py", line 224, in meth
return getattr(self._sock,name)(*args)
socket.error: [Errno 99] Cannot assign requested address