String modifying error, trying to delete data in string

[mikie]

Here is some code:
   import socket,sys

   s=socket.socket()
   port=int(sys.argv[1]) 
   s.bind(("127.0.0.1",port))
   s.listen(2) 
   cls,addr=s.accept()

   data=cls.recv(1024)
   f=data.pop("Proxy-Connection")
   cls.close()

Im trying to delete some headers in the request but get an error saying:
'str' object has no attribute 'pop'

How can I modify data received from the client?
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two html pages from twisted server

[Mikie]

Could soneone show me a simple example of a twisted server that loads
2 html pages

www..com:7899/page1/
www..com:7899/page2/

Thanx
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