pythoncommand-linewindows-10errorlevel

Using Python to set Windows ErrorLevel

I'm investigating an application that runs programs via a YAML file.

I need to write a Python script that exits with the code specified in the command line argument[1].

My attempt (exit_code_argument.py):

import sys
sys.exit(sys.argv[1])

The idea is for the Python script to set the Windows Command Prompt's ErrorLevel variable on exit or termination of the script.

I'm always getting ErrorLevel set to zero:

C:\sandboxes\git\utfa>python exit_code_argument.py 1
1

C:\sandboxes\git\utfa>echo %errorlevel%
1

C:\sandboxes\git\utfa>python exit_code_argument.py 27
27

C:\sandboxes\git\utfa>echo %errorlevel%
1

C:\sandboxes\git\utfa>python exit_code_argument.py 3
3

C:\sandboxes\git\utfa>echo %errorlevel%
1

C:\sandboxes\git\utfa>python exit_code_argument.py 0
0

C:\sandboxes\git\utfa>echo %errorlevel%
1

My goal is to run exit_code_argument.py 3 and have the statement echo %errorlevel% print 3 on the console (same number as the first parameter to exit_code_argument.py).

What am I doing wrong or how do I fix the Python script?

Solution

  • The problem is that you need to return an integer, and you're returning a string. Try:

    sys.exit(int(sys.argv[1]))

    and you should achieve happiness.