PrusaSlicer M73 percentage and time conversion to M117 for LCD character display for standard Marlin firmware
This version was tested with python 3
Go to: Print settings
> Output options
> Post-processing scripts
Add line: "[python directory]\python.exe" "[script directory]\script.py";
https://forum.duet3d.com/topic/14675/using-prusaslicers-m73-progress-to-run-macro
MarlinFirmware/Marlin#18648 (comment)
prusa3d/PrusaSlicer#4593 (comment)
prusa3d/PrusaSlicer#3758 (comment)