Running python script in Windows background

I have a long python script that runs on a Windows host for a long while (by design), And the application that runs that script (via windows CMD) needs to receive a response quickly or else it times out.

is there a way to run the script, and have a quick "ok" output for the other application to not time out, while the script still runs in the background?

i have tried "start py script.py" or "start /b py script.py" but it does not give any response.

Copyright Notice：Content Author:「Yarden」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/59663269/running-python-script-in-windows-background

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