Calling python scripts. Returning python output.

[marcovth 0]

Hello. Completely new to Delphi. 

 

I simply want to run a python script by pushing a button, and report back the python output.

 

If possible, I would also want to give the python script command-line arguments.

 

It's full of errors. Thanks for helping out.

procedure TForm1.Button1Click(Sender: TObject);
begin
  var pyIn := TStringList.Create;
  var pyOut : PPyObject;
  with PythonEngine1 do
    begin
      try
        pyIn.LoadFromFile('D:\Delphi\Projects\Projects1\test.py');
        pyOut:=ExecStrings(pyIn);
        if Assigned(pyOut) then
            begin
              Memo1:= PyObjectAsString(pyOut);
              Py_DECREF(pyOut);
            end
        else
            Memo1:= 'No python output';
      finally
        pyIn.Free;
      end;
    end;
end;

 

[pyscripter 694]

See Demo1.

[marcovth 0]

I am sorry, but I don't see how Demo1 could help me.

What I am looking for is the very, very basic of what Python4Delphi should offer to python programmers checking out Delphi.

Similar to a subprocess in python ...

sysCall = subprocess.run(f"""Your.exe {argument1} {argument2}""",shell=True, capture_output=True)
sysCallError = sysCall.stderr.decode('utf-8')
if len(sysCallError.strip()) > 0:
	print(sysCallError)
sysCall = sysCall.stdout.decode('utf-8')

Continue to parse the sysCall output.

I will check out the DOSCommand package before moving on to something else.

 

[Die Holländer 49]

>>What I am looking for is the very, very basic of what Python4Delphi should offer to python programmers checking out Delphi.

But that is exactly what the demo 1 is doing. Open your .py file (here with extra button-click) and click a button to

execute the script and show the output in a memo. This demo is Gui based, so no output to a shell or something but to a visual component TMemo.

Please tell why you don't find that very, very basic. (2 lines of code.)

 

Maybe you want to execute a non GUI Delphi executable with two parameters and write the Python output to a shell??