Erik Lechak wrote:

>  I have started working on a graphical programming tool for Python.  It
>  is similar to Matlab's Simulink (block diagram programming tool).

Not that I'm trying to discourage you in any way from working on your own, but
are you familiar with viper?

http://www.scripps.edu/~stoffler/proj/ViPEr/viper.html

This thing is simply amazing, big, stable, and heavily used for real research. 
You might at least want to have a look at it for inspiration purposes if you
wish to develop your own project.

Best regards,

Fernando.
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