Call Python From Bat File And Get Return Code

Question

I'm looking for a way to call a python script from a batch file and getting a return code from the python script. Confusing I know, but it's based on a system that's currently in use. I'd re-write it, but this way would be much, much quicker.

So:

Bat ---------------------> Python
     * call python file *

Bat <--------------------------------- Python
      * python does a load of work *
      * and returns a return code  *

Answer 1

The windows shell saves the return code in the ERRORLEVEL variable:

python somescript.py
echo %ERRORLEVEL%

In the python script you can exit the script and set the return value by calling exit():

exit(15)

In older versions of python you might first have to import the exit() function from the sys module:

from sys import exit
exit(15)

Answer 2

Try:

import os
os._exit(ret_value)

You should also check:

• sys.exit()