I use sublime text 3 in lubuntu in oracle virtual box for python coding. I want an external terminal to execute my scripts written in the text editor. I wrote the following code and built a new system,
{ 
  "cmd": ["gnome-terminal -e 'bash -c \"python3 -u
  $file;echo;echo Press ENTER to exit; read line\"'"],
  "shell": true 
}
when I press ctrl+build it says no build system found. I have also installed gnome using the lxterminal. What should I do in the terminal to get the codes running?