Python script output on Job Log only displayed at the end of the script

Products

• CA Automic Workload Automation - Automation Engine
• CA Automic Dollar Universe
• CA Automic Applications Manager (AM)

Issue/Introduction

When launching python scripts via a Jobs / Uproc / Interpreter, the python script output is not displayed on the Jobs Report / Uproc Job Log until the python script has finished its execution.

Environment

Any Scheduler / Environment using python scripts

Cause

Expected behavior, by default python buffers stdout and stderr streams until the end of the execution.

The option -u will allow to have the expected behavior:

-u     : force the stdout and stderr streams to be unbuffered;
         this option has no effect on stdin; also PYTHONUNBUFFERED=x

Resolution

In order to be able to have the Job Log / Report updated in real-time while the python script is running, you need to add the option -u Invoke the python script via python -u yourscript.py

For example, this is the example of UC_EXT_INTERPRETERS_WINDOWS set on client 0 for Automic Workload Automation:

Please note that python.exe folder location SHOULD be available on the Windows PATH variable.

The same for Unix/Linux on UC_EXT_INTERPRETERS_UNIX