julian wrote: > Hi all, > I know it's a kind of bizarre question but here I go: I want to > execute an script using popen4. This script executes a command in turn > using popen4 too. The first one throws a 256 exit code. > Any suggestions? Popen4 is gone in 3.0 and I presume deprecated in 2.6, replaced in both by new subprocess module. Latter might work better for you.