[Tutor] Reading in file and processing it in a thread (original) (raw)

vicki at thepenguin.org vicki at thepenguin.org
Sat Jul 24 19:08:30 CEST 2004

Using the same variable in multiple threads (in this case, 'self' if nothing else) is very likely to cause problems. In particular, access to any wx.Python GUI elements across threads is not safe. Make your threaded function entirely independent of the rest of your code (and make it a function rather than a method, unless it's a method of a new object), and then use documented-threadsafe methods to get information back from it. (IIRC, wx.PostEvent() will deliver an event to the main GUI thread in a safe manner; just define a custom event for the main thread to listen for, and have your threaded function post that event with the necessary information attached.)

Thanks. I need to digest all that you wrote here. I am totally new to threaded programmming, and there seems to be a shortage of published books on the subject. I'm sure I'll have more questions as I go along.

By the way, is there any reason that you're using the thread module instead of the threading module? The latter is a higher-level, more user-friendly interface built on top of thread, and is usually the recommended module for use.

Only lack of knowledge. I found the thread module first.

Thanks again, Vicki

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