determine if os.system() is done

[Peter Hansen]

Martin P. Hellwig wrote:
> The only thing I am disappointed at his writing style, most likely he 
> has a disrupted view on social acceptable behavior and communication.
> These skills might be still in development, so perhaps it is reasonable 
> to give him a chance and wait until he is out of his puberty.

He's 37 years old!  How long should one be given to mature?

-Peter