[cuser]

Originally Posted by kovidgoyal

If you just want to alter some python code, all you need to do is set one environment variable, nothing else. https://manual.calibre-ebook.com/develop.html

https://www.mobileread.com/forums/sh...d.php?t=251201


Also read it several times. I didn't understand it.
Not familiar with python compilation.
Only c#.
python -O -m py_compile backend.py is simple.
Stay in the 5.1 version.