What does debug process is busy mean?

edit

Thanks, I gave it a try. But since the class hasn't been constructed yet when I try to generate an instance of it with

 a = prolog.Term("mother(alice,bill)")

, it generates an error

 Traceback (most recent call last):
   Debug Console, prompt 1, line 1
 builtins.NameError: name 'prolog' is not defined

It looks like the module also accepts a file, but I tried giving it a file as well. Same problem.

If you debug/run the file then the 'if __name__ == "__main__"' clause at the bottom will be true and it'll invoke main() right away. Unless that reaches an exception or breakpoint the Debug Console cannot invoke code because it's run in the context of the current debug stack frame. If instead you do 'import prolog1' (for example in Wing's Python Shell; this assumes prolog1 is on your Python Path) then the module will be loaded so you can do things like prolog.Term("whatever"). Or set a breakpoint on the last line of the file, debug it, and then work in the Debug Console. The latter is what I would tend towards doing to work interactively with this.