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Hello, after the last update 5 days ago, python4delphi crashes immediately after launch: Delphi XE2

Hello, the problem has not yet been resolved. I downloaded the newest version of Python4Delphi from GitHub and Python 3.13.0, but it still crashes

Hello, I just started studying the OmniThreadLibrary library, but I can’t figure out how to parallelize this Regex procedure ? procedure pars(const Regex: TRegEx; const str: string); var Match: TMatch; begin Match := Regex.Match(str); //Parallel.ForEach(???).Execute( ??????????????? while Match.Success do begin //Match.Value; Match := Match.NextMatch; end; end;

That even Regex cannot be accelerated in any way through OmniLibrary ?

I guess I found something CRASH in AssignPyFlags(Config); from here: var i : Integer; Config: PyConfig; Status: PyStatus; ErrMsg: string; begin if Assigned(gPythonEngine) then raise Exception.Create('There is already one instance of TPythonEngine running' ); gPythonEngine := Self; FIORedirected := False; if FInExtensionModule then FInitialized := True else begin // Fills Config with zeros and then sets some default values if pfIsolated in FPyFlags then PyConfig_InitIsolatedConfig(Config) else PyConfig_InitPythonConfig(Config); try AssignPyFlags(Config); // CRASH HERE // Set programname and pythonhome if available if FProgramName <> '' then PyConfig_SetString(Config, PPWcharT(PByte(@Config) + ConfigOffests[MinorVersion, TConfigFields.program_name]), PWCharT(StringToWCharTString(FProgramName))); if FPythonHome <> '' then PyConfig_SetString(Config, PPWcharT(PByte(@Config) + ConfigOffests[MinorVersion, TConfigFields.home]), PWCharT(StringToWCharTString(FPythonHome))); // Set venv executable if available if FVenvPythonExe <> '' then PyConfig_SetString(Config, PPWcharT(PByte(@Config) + ConfigOffests[MinorVersion, TConfigFields.executable]), PWCharT(StringToWCharTString(FVenvPythonExe))); // Set program arguments (sys.argv) SetProgramArgs(Config); // PythonPath SetPythonPath(Config);

I don’t understand how and where initialization is performed, you should know this

Hello debugger brought me here: procedure TPythonEngine.AfterLoad; begin inherited; Initialize; end; If I comment out Initialize; then there is no crash

I can’t debug it because it’s crashing here please fix it somehow or try a virtual machine with windows 7 + delphi XE2

I was wondering if this error could be related to the fact that I am using Python under Windows 7 https://github.com/adang1345/PythonWin7 ? Although this version https://github.com/pyscripter/python4delphi/commit/46cd7a66dd9a249b3bc6bac9c2be611f2bde2069 python4delphi works successfully with this !

Yes, I was really mistaken and the error is not where I previously thought the error was with LoadDll: procedure CreatePyEngine; begin PythonEngine := TPythonEngine.Create(nil); PythonEngine.LoadDll; // CRASH HERE //TPythonThread.Py_Begin_Allow_Threads; end;

No, the problem is not in demo36, but in pythonengine.pas itself, I tried my ready-made projects, which worked and are now working with previous versions of python4delphi. The problem most likely manifested itself after editing: Paths := string(FPythonPath).Split([PathSep]); on Paths := SplitString(string(FPythonPath), PathSep); When previous versions did not work because of this syntax, I myself tried to fix it on SplitString and immediately such crashes appeared last work version from Delphi XE2 https://github.com/pyscripter/python4delphi/commit/46cd7a66dd9a249b3bc6bac9c2be611f2bde2069 UPD: Most likely I think that there is an incorrect conversion here: PyWideStringList_Append(PWSL, PWCharT(StringToWCharTString(Paths))); Please study this demo TStringDynArray is not friendly with such transformations, the output turns out to be crooked program Project2; {$APPTYPE CONSOLE} uses System.SysUtils, System.StrUtils, System.Types; var s:string; ar:TStringDynArray; begin s:='python4 delphi'; ar:=splitstring(s,' '); writeln(PansiChar(ar)); writeln(PChar(ar)); writeln(PansiChar(ansistring(ar))); readln; end.

1. https://github.com/pyscripter/python4delphi 2. Python version 3.12.1 3. Demo36

Hello, I am faced with a problem that I need to run one .py script in several instances, but I can’t achieve this through python4delphi ( I'm trying to do it like this, but since the script has been running for some time, the program just crashes: program ParallelPython; {$APPTYPE CONSOLE} {$R *.res} uses System.SysUtils, System.Diagnostics, System.Variants, System.SyncObjs, PythonEngine; var PythonEngine: TPythonEngine; type TPyThread = class(TPythonThread) protected procedure ExecuteWithPython; override; public constructor Create(createsuspended:boolean); end; procedure CreatePyEngine; begin PythonEngine := TPythonEngine.Create(nil); PythonEngine.LoadDll; TPythonThread.Py_Begin_Allow_Threads; end; procedure DestroyEngine; begin TPythonThread.Py_End_Allow_Threads; PythonEngine.Free; end; procedure TPyThread.ExecuteWithPython; const Arg = 'import sys'+#13#10+ 'def run_python_script(args_str):'+#13#10+ ' args_list = args_str.split()'+#13#10+ ' sys.argv = [sys.argv[0]] + args_list'; begin inherited; while true do begin PythonEngine.ExecString(Arg); PythonEngine.ExecFile(extractfilepath(paramstr(0))+'script.py'); end; end; constructor TPyThread.Create(createsuspended:boolean); begin inherited Create(CreateSuspended); ThreadExecMode := emNewInterpreterOwnGIL; FreeOnTerminate := True; end; var I: Integer; begin try CreatePyEngine; for I := 1 to 10 do TPyThread.Create(False); finally //DestroyEngine; end; ReadLn; end. And it probably also crashes because the script is trying to be executed in one interpreter (

If I run 10 instances of my own program, then all 10 instances work, and if I create and then destroy pythonengine, it will write an error that the python .dll is already in use ?

Hello, I ran into a problem that input/output does not work through the OnReceiveUniData/OnReceiveData event and others, but it works through TPythonGUIInputOutput.Output unit Unit2; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, PythonEngine, PythonGUIInputOutput; type TForm2 = class(TForm) Button1: TButton; Button2: TButton; Memo1: TMemo; procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); procedure OnReceiveUniData(Sender: TObject; var Data: string); procedure CreatePyEngine; private { Private declarations } public { Public declarations } end; var Form2: TForm2; PythonEngine: TPythonEngine; working: boolean = True; implementation {$R *.dfm} procedure TForm2.OnReceiveUniData(Sender: TObject; var Data: string); begin Memo1.Lines.Add(Data); //No Memo1.Lines.Add('2'); //No end; procedure TForm2.CreatePyEngine; var pyio:TPythonGUIInputOutput; begin pyio := TPythonGUIInputOutput.Create(nil); pyio.UnicodeIO := True; pyio.DelayWrites := True; pyio.OnReceiveUniData := OnReceiveUniData; //pyio.Output:=Memo1; //------- WORK PythonEngine := TPythonEngine.Create(nil); PythonEngine.IO := pyio; PythonEngine.RedirectIO := True; PythonEngine.LoadDll; TPythonThread.Py_Begin_Allow_Threads; end; procedure TForm2.Button1Click(Sender: TObject); const Script ='print("Hello")'; begin CreatePyEngine; // TThread.CreateAnonymousThread( procedure var Py: IPyEngineAndGIL; begin Py := SafePyEngine; while working do PythonEngine.ExecString(Script); end).Start; end; procedure TForm2.Button2Click(Sender: TObject); begin working:=False; end; end.

Big Thanks This Is Work: procedure TForm2.OnData(Sender: TObject; const Data: string); begin Memo1.Lines.Add(Data); end; procedure TForm2.CreatePyEngine; var pyio:TPythonInputOutput; begin pyio := TPythonInputOutput.Create(nil); pyio.UnicodeIO := True; pyio.DelayWrites := False; pyio.OnSendUniData := OnData; PythonEngine := TPythonEngine.Create(nil); PythonEngine.IO := pyio; PythonEngine.RedirectIO := True; PythonEngine.LoadDll; TPythonThread.Py_Begin_Allow_Threads; end;

Hi of course I can py4delph.zip

Too Not work procedure TForm2.OnData(Sender: TObject; const Data: string); begin Memo1.Lines.Add(Data); //No Memo1.Lines.Add('2'); //No end; procedure TForm2.CreatePyEngine; var pyio:TPythonInputOutput; begin pyio := TPythonInputOutput.Create(nil); pyio.UnicodeIO := True; pyio.DelayWrites := True; pyio.OnSendUniData := OnData; //pyio.Output:=Memo1; //------- WORK PythonEngine := TPythonEngine.Create(nil); PythonEngine.IO := pyio; PythonEngine.RedirectIO := True; PythonEngine.LoadDll; TPythonThread.Py_Begin_Allow_Threads; end;

Hello, it still doesn't work =( procedure TForm2.CreatePyEngine; var pyio:TPythonInputOutput; begin pyio := TPythonInputOutput.Create(nil); pyio.UnicodeIO := True; pyio.DelayWrites := True; pyio.OnReceiveUniData := OnReceiveUniData; //pyio.Output:=Memo1; //------- WORK PythonEngine := TPythonEngine.Create(nil); PythonEngine.IO := pyio; PythonEngine.RedirectIO := True; PythonEngine.LoadDll; TPythonThread.Py_Begin_Allow_Threads; end;

Hello, please tell me, I need to run one .py script, but every time in a new window, and by default it runs in one: procedure ExecPythonFile(const MyPyFile:String); var Py: IPyEngineAndGIL; begin Py := SafePyEngine; try Py.PythonEngine.ExecFile(MyPyFile); except end; end; Due to the fact that the script runs in only one window, my small program crashes even on 10 threads =(

Hello again, in new versions of Python, they accelerated the GIL in python4delphi, is it emNewInterpreterOwnGIL? I just noticed that emNewInterpreterOwnGIL does not work with .py files ?

I just can't run 10 instances of a .py script through Python4Delphi, right? - There must be a bad low-quality library (

Hello, look what I need to achieve, I can run one .py script in at least 10 console windows at the same time, but I can’t achieve this through Python4Delphi with GIL locking only one running .py script works at a time

Does my code look exactly like this or differently?

Dude, all the indentations are correct everywhere, I don’t know where you got the idea that they are incorrect?