loop until keypress (Windows XP)

[Gabriel Genellina]

At Thursday 10/8/2006 02:19, placid wrote:

>chr = sys.stdin.read(1)
>while chr != "q":
>     """ keep printing text """
>     chr = sys.stdin.read(1)
>
>but again this blocks too.
>
>is there a way to do this, wait for user input but dont block? I could
>use a thread that just does the previous code block but i already have
>three Thread classes, its just getting too complex with threads!

If your script only needs to be run on Windows -as the subject 
suggests- you can use the msvcrt module:

from msvcrt import kbhit,getch

stop = False
while not stop:
   print "Hello world!"
   if kbhit(): stop = getch()=='q'

kbhit() is used to detect when a keypress is waiting, so the next 
getch() will not block.



Gabriel Genellina
Softlab SRL 


	
	
		
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