Os.exec On Windows

I have a script that calls os.execvp into another Python instance. After doing this, I appear to be attached to a cmd.exe instance, not the Python instance I just created. The Pyth

Solution 1:

On Unix executing binaries is split into two stages - fork(3) to clone current process and exec(3) to load executable into address space. On windows there is only CreateProcess which does the same thing as fork+exec.

For portability your best bet is to use subprocess.Popen (which also does proper filename quoting on Windows unlike os.* counterparts) as in http://docs.python.org/library/subprocess.html#replacing-the-os-spawn-family