calling a program without waiting for it to finish

[mnietz]

Hey Guys,

I looking for a way to execute a command-line programm from Pyhton
without having to wait for it to finish.
AFAIK i can't use os.popen() or os.system() because these methods wait
for a return-value. Or can I use the unix command exec in way like
start in windows os.system("start ping -t www.google.com")?
That does exactly what i need.

mn.