Question

Following code return with [Errno 10] No child processes on windows platform (python version 2.7.2).

import subprocess
import os
pid = subprocess.Popen(["cmd"]).pid
os.waitpid(pid, 0)
print 'process %d finished' % pid

The same code works well on Linux.

Answer 1

Maby this will work- but I have no idea, why your code isn’t working on Windows- everything looks fine:

import subprocess
subp = subprocess.Popen(["cmd"])
subp.wait()
print 'process %d finished' % subp.pid