Re: Where to find good/simple examples for gnatcoll (python)?

[briot.emmanuel@gmail.com]

If you only want to execute a python script (and perhaps get the output as a
string), you could try:

   Python : constant Scripting_Language :=
       Lookup_Scripting_Language (Repo, "python");
   GNATCOLL.Scripts.Execute_Command (Python, "2 + 3");

Now, if you want to get the result, this is a little more complicated. Assuming you
want to call a foo() function in python, you have to prepare an object with the arguments,
and that will receive the return value.

    Data : Callback_Data'Class := Create (Python, 0);
    Result : Integer;
    Data.Execute_Expression ("2+3");   --  newer versions of gnatcoll
    Result := Data.Return_Value;

or

    Data : Callback_Data'Class := Create (Python, 2);
    Result : Integer;
    Data.Set_Nth_Arg (1, 2);
    Data.Set_Nth_Arg (2, 3);
    Data.Execute_Command ("foo");   --  newer versions of gnatcoll
    Result := Data.Return_Value;