running non-python progs from python

[Diez B. Roggisch]

> Here is the code used to call it from Python:
> import os
> filename = "C:\Python22\Canyon.mid"
> os.system("C:\Python22\playb.exe%s"%filename)
> ...this causes a dos box to appear which promptly hangs and does nothing,
> at which time Python stops responding. Vartiations on this will cause the
> dos box to appear with the message "Bad command or file name".
> 

Looks like there is a space missing - 

os.system("C:\Python22\playb.exe %s"%filename)
                                ^

Diez