When do default parameters get their values set?

[bSneddon]

Thanks to all.  I now understand what is happening.   Originally wrote a script  be executed from command line.   No want to use Gui to change defaults.   Will refactor to fix where necessary.

On Monday, December 8, 2014 5:10:58 PM UTC-5, bSneddon wrote:
> I ran into an issue setting variables from a GUI module that imports a back end module.  My approach was wrong obviously but what is the best way to set values in a back end module.
> 
> #module name beTest.py
> 
> cfg = { 'def' : 'blue'}
> 
> def printDef(argT = cfg['def']):
> 	print argT
>  
> 
> #module name feTest
> import beTest
> 
> beTest.cfg['def'] = "no red"
> beTest.printDef()
> 
> 
> 
> This prints blue.      I suppose because I am changing a local copy of cfg dictionary.  What is the write approach here?
> 
> 
> Thanks
> 
> Bill