if u want to use it you must have python3 in your GNU/Linux and set permission for run it.
*** if you haven't got knowledge for setting a permission *** \n just going to your dir of file and right click and open terminal then use (chmod 0555 ./configurs.py or chmod +x ./configurs.py)
or
open terminal and cd dir of configurs.py and use (chmod 0555 ./configurs.py or chmod +x ./configurs.py)
thanks. <3