createfilehandler, how to use it with Tk?

[Fredrik Lundh]

algaba at my-deja.com wrote:
> I have to communicate a tk front end with another modules.
> And I'm trying:
> I've been browsing  fnorb example of use of createfilehandler
> but it's as complex as hell.
> has anyone a simple,straightforward example of it?

forget about createfilehandler. use asyncore/asynchat instead:
http://www.python.org/doc/current/lib/module-asyncore.html

to use them under Tk, you can use a
simple polling scheme:

import asyncore

class myApp:
    def __init__(self, master):
        self.master = master

        ...

        self.poll()

        # issue a HTTP request (see handbook example)
        http_client("www.python.org", "/")

    def poll(self):
        # keep the server up and running
        try:
            asyncore.poll(0.05)
            self.master.after(100, self.poll)
        except:
            pass # error in network callback

...

</F>