need to add some function to phyton script -- 2

we have a phyton script that Are used with Ubuntu to print out sticker , directly from web. some times it hang up and Are not able to close, we have to start the script again and then ut work. this issue have to be fixed .( it should be a loop problem ) as it hangs , when you set time intervall. and we Want to add a simple input box to be able to print simple qrcodes.

QR code should include following info: AUTOBUTLER:CAR:A1-2-2:location

also we Are changing computer and need to install this script om new computer. and set up printers.