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Obviously you could attach a fancier GUI front end, but this is not a book about GUI programming, so I'll leave that as an exercise for the reader.Given that you're writing a client to talk to an XML-RPC server, you know that the documents you're processing always take this form. (For the moment, I'm going to ignore the possibility of a fault response to keep the examples smaller and simpler.
Thus you may want to be a bit more explicit about handling a case in which something unexpected is returned.The user neither knows nor cares that the request is being sent and the response is being received in an XML document. In fact, the user may not even know that the request is being sent over the network rather than being processed locally.All the user sees is the very basic command line interface.The main point is this: Most programs you write are going to read documents written in a specific XML vocabulary.They will not be designed to handle absolutely any well-formed document that comes down the pipe.