[Edu-sig] Simple example involving threads and infinite loops.

Andre Roberge andre.roberge at gmail.com
Wed Jul 18 00:08:42 CEST 2007

For those that happen to have downloaded Crunchy (version 0.9x), I
have posted a very simple example[1] that illustrate some properties
of threads, and possible interactions between them.


The idea of threads is something that should be accessible to anyone
familiar with using a computer.  However, I can not think of a simpler
example in any Python environment to demonstrate
1. How threads can allow different parts of a program to work
independently - in this case, two different Python interpreters.
2. How interactions between threads make certain things (like breaking
of an infinite loop) possible which would not be using a single

Of course, the user has to take the teacher's word (or mine) for it
when it is stated that the two Python interpreters are running in
separate threads.


[1]... and, as is often the case, this example has uncovered a "small"
bug with Crunchy which you might get to see...

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