[SciPy-dev] gui_thread issue

Fernando Perez Fernando.Perez at colorado.edu
Fri Nov 5 12:12:47 CST 2004

Prabhu Ramachandran schrieb:
>>>>>>"PP" == Pearu Peterson <pearu at scipy.org> writes:

>     PP> Btw, is there any reason that gui_thread.start() should not be
>     PP> executed while importing gui_thread? People tend to forget
>     PP> executing gui_thread.start().
> The trouble is if you want to access gui_thread functionality without
> starting the secondary thread.  If I am not mistaken, if
> gui_thread.start() was called on import and wx was already imported,
> the import would fail and you can't import anything inside gui_thread.

Would it not then make sense to reorganize the code a bit?  What about 
something like:

# start the secondary thread automatically, ready to use:
from gui_thread import secondary_thread  # or whatever good name you want

# pull in subfunctionality _without_ the actual secondary thread starting at all:
from gui_thread import foo bar examples

Something like this would be explicit enough ('explicit is better than 
implicit'), while avoiding the (IMHO error-prone) problem of requiring a 
standalone gui_thread.start().

For interactive examples, people would just need to remember to use the first 
line above.  Minimally longer than 'import gui_thread', but  at least still a 
single line (and something which can easily fit into an ipython profile :)

Just my $2e-2



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