The shortcut key is `F11` to start debugging. But issue is that I have to be on that file and then hit F11 to start debugging. 
Eg. 

my file to launch the application is "`launch.py`" and "`example.py`".  

`example.py` is open in the editor whereas `launch.py` is not.  

Now, if I hit `F11` it will try to launch the application using "`example.py`" and terminates due to error (as expected). 

So then I have to open the "`launch.py`" in the editor and then hit `F11` to start debugging the application.  

Is there any neater way to configure the debugging, so that it starts the application in single hit/key? 

Edit: `example.py` is some other file (some module). It does not launch the application.