[visionegg] Re: Terminating a While Loop

Mark,
 
Alright I tried this, and I seemed to get some slightly better results, it 
didnt fail as quickly. But when I looked into my log of errors, it now says 
that the p in the p.go is not defined. Heres the exact error:
 File 
"C:\Python22\VisionEgg\visionegg-0.9.9-demo\demo\project\stim_project4c.py", 
line 614, in ?
    p.go()
NameError: name 'p' is not defined
 
I havent had a problem with it before, when it was in the while loop. Any 
suggestions as to why its becoming a problem now? Sorry if this is a stupid 
mistake on my part, but any advice that you may have would be much appreciated.
-Jeff

________________________________

From: visionegg-bounce@xxxxxxxxxxxxx on behalf of Mark Halko
Sent: Tue 7/17/2007 12:52 PM
To: visionegg@xxxxxxxxxxxxx
Subject: [visionegg] Re: Terminating a While Loop



How about something as simple as:

quit_now = False
pause = False
while not quit_now:
        if not pause :
                p.go()
        for event in pygame.event.get():
                if event.type == pygame.locals.KEYDOWN :
                        if event.key == pygame.locals.K_ESCAPE :
                                quit_now = True
                        if event.key == pygame.locals.K_SPACE :
                                pause = not pause

You could also set quit_now to True to quit if you reach some 
criterion level from your experiment.

Mark

On Jul 17, 2007, at 1:14 PM, Maher, Jeffrey wrote:

> Hello,
> Im currently working on the following code trying to determine a 
> way to exit a while loop before the criteria is satisfied.
>
> i=0
>         while i<eval(self.number.get()):
>                 p.go
>                 i=i+1
>
> My goal is to set it to a certain key that will either pause the 
> program, and then resume it once pressed again, or have it exit the 
> program all-together, either/or would be acceptable.
>
> I had tried setting it to the "esc" key by doing the following code 
> that I found while searching for an answer:
>       if msvcrt.kbhit() and msvcrt.getch() == chr(27):
>            break
> But that just causes the program to fail to start up.
> I have also tried:
> for event in pygame.event.get():
>         if event.type == pygame.locals.KEYDOWN:
>             if event.key == pygame.locals.K_ESCAPE:
>                   sys.exit()
> But this again just causes the program to fail to start up.
>
> Any suggestions would be greatly appreciated.
> -Jeff
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