pyscripter

MahdiSafsafi/zControls: zControls (github.com)

The query is handled in xe2 bpl installation problem , need help · Issue #313 · pyscripter/python4delphi (github.com) Contributions from XE2 users are welcome.

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Hard to answer this question in a meaningful way, since it depends a great deal on what you are trying to do. In general though: you can code performance critical computations in Delphi. See python4delphi/Tutorials/Webinar I at master · pyscripter/python4delphi (github.com) for an example of speeding up python code 60 times doing this. use python modules coded in C (or other compiled languages) that can spread computations to multiple cores.

class procedure TPythonThread.Py_Begin_Allow_Threads; You also need to call Py_End_Allow_Threads when all threads finish.

You need to call PyBeginAllowThreads in the main thread.

Thanks.. It is now fixed.

FProgramName should have a lenght of 0 (empty string) unless you call SetProgramName. Could you please check whether UCS4StringToUnicodeString fails with an empty string? UCS4String is defined as an array of UCS4Char. Could this be a fix? function TPythonEngine.GetProgramName: UnicodeString; begin {$IFDEF POSIX} if Length(FProgramName) = 0 then Result := '' else Result := UCS4StringToUnicodeString(FProgramName); {$ELSE} Result := FProgramName; {$ENDIF} end;

Do you mean? WL[Ι] := UnicodeStringToUCS4String(TempS); Changes committed.

There was a typo which is not fixed {$IFDEF POSIX} PWCharT = PUCS4Char; PPWCharT = PUCS4Char^; WCharTString = UCS4String; {$ELSE} Please try again with the latest. Please report back any further issues, since I have not tested with Linux recently.

There are many Delphi units for doing that e.g. - JCL library in JclSysUtils Execute functions - JVCL JvCreateProcess component and many others

Not quite. You can use PyScripter code as a basis for providing embedded IDE functionality, however that would be non-trivial.

I said "after loading" loosely speaking and not "in the OnAfterLoad event". Indeed you can only call Py_Begin_Allow_Threads after the engine is initialized. I have not tested, but you can set AutoFinalize to False and in the OnBeforeUnload do Py_End_Allow_Threads; Finalize; Also probably, skipping the above when the application closes down may not be necessary.

Of course it is. If another thread holds the lock, PyGILState_Ensure blocks until the GIL becomes available, i.e. the holding thread calls PyGILState_Release. If more than one threads are waiting for GIL then I think it is assigned of FCFS basis. The automatic switching that you described only applies to threads created with the threading code. All other threads need to get the GIL before executing python code and then release it. Yes you do need to call Py_Begin_Allow_Threads in the main thread. When the python DLL loads, the main thread owns the GIL and it needs to release it before other threads can execute python code.

I am using OleSetClipboardData with a IDataObject. This does not have any other arguments. And I am not handling WM_RENDERFORMAT or WM_RENDERALLFORMATS. These messages are handled by the OLE clipboard.