Name: [16797] Tim Bower
Member: 86 months
Authored: 8 videos
Description: Assistant Professor Computer Systems Technology Kansas State University at Salina `Tim Bower <>`_ My blog: `Open Source on the Prairie <>`_ ...

Code Review of multi-party graphical chat client [ID:1548] (2/4)

in series: Python Network Programming

video tutorial by Tim Bower, added 07/09

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In this video I review the source code for the multi-party graphical chat client. This a multi-threaded wxPython program.

I show how to when to use the wx.CallAfter() function, which is called by a different thread than the wxPython graphics thread to generate a wxPython event and send an optional message to alert the graphical program of some external event.

A sub-class of threading.Thread is used to invoke the thread that does the network communication. We also use a little bit of locking with the threading.Lock() object to coordinate a shared queue (a list) between the two thread.

We also show how to establish a client side socket connection to a server.

More discussion about this program and more Python network programming topics can be found on my Network Programming Study Guide

Here is a link to the specific page in the Study Guide where all the source code can be downloaded from.

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Really nice and useful. I'm looking forward to seeing the rest of the series.

Thanks, great tutorial. Looking forward to the rest of the series.

Nice code walkthrough. For intermediate+ Pythonistas there are some useful code-pointers, but even beginners should appreciate seeing the skeleton of a client-server app. Thread-locking is a pretty vital area these days, so v. nice to see the basics covered. Personally I picked up a lot in a very short space of time. Little things like the thread-lock being specified in seconds, not milliseconds stand out. Anyway, these sort of code walkthroughs are a great way to learn and offer fascinating insights into the various ways we approach programming problems.

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