Quote iogilvy: > i wish to have some extended functionality added to sockets > > i can create my own socket class class mysocket(socket.socket): > > and all should be fine. Except, the sockets are created for me by the > accept method, listening on port. So how can i take the standard > socket created for me and create a 'mysocket'. I need a method that > will initialise any new properties i have added in my class, but how > can i change the class of the socket created? >
Someone correct me if I'm wrong, but I don't believe it's possible to change the type of objects made from builtin classes. Though if it's a custom class you can, for example: >>> class Foo: pass >>> class Bar: pass >>> obj = Foo() >>> obj.__class__ = Bar One option is to make your custom socket a wrapper around socket.socket and then pass through the calls you don't want to handle to socket.socket. The downside to this is there are quite a lot of methods that need to be accounted for. For example: >>> class CustomSocket: >>> def __init__(self, socket): >>> self.socket = socket >>> def connect(self, address): >>> self.socket.connect( address + '.some.tld' ) >>> [etc] >>> >>> ... >>> >>> s = server_socket.accept() >>> s = CustomSocket(s) Another approach you might want to look at is populating your object at runtime through a function. This won't give it the type you want, but it will give it any methods and attributes it would have gotten from your class with the added benefit of it still being of type socket.socket. Example: >>> def modify_socket( socket ): >>> socket.cabbages = 'Yuk' >>> socket.apples = 'Yum' >>> >>> def info(): >>> print 'Cabbages? %s\nApples? %s' % (socket.cabbages, socket.apples) >>> obj.show_info = info >>> >>> ... >>> >>> s = server_socket.accept() >>> modify_socket( s ) >>> s.show_info() Cabbages? Yuk Apples? Yum >>> s.apples = 'Yummie' >>> s.show_info() Cabbages? Yuk Apples? Yummie >>> type(s) <class 'socket._socketobject'> Good luck. Ian -- http://mail.python.org/mailman/listinfo/python-list
