diaroeh

Dear pyscripter, thanks for your Demos, I have studied and tested them. Even just the less simple Demo was very interesting. I never thought that a standard TMemo could be too slow, even I never thought that I need a TCriticalSection in a normally not critical state, also when using VCL and not FMX there has been no problems. But maybe it is the price for developement on different platforms? However, thank you very much, good to know that there is not really a problem running python4delphi under FMX and now I know that FMX has just to mannered in a different way. Cheers Dirk

Dear pyscripter, thanks for your demos, I will have a look on it tomorrow. Have a nice sunday evening Dirk

Yes I did and adding event handlers on both OnSendUniData and OnSendData ... IDE is RAD Studio 11 ...

Dear pyscripter, I did it as you suggested (OnSendUniData), but it seems this event handler was never called under FMX. I also erased IO from TPythonGUIInputOutput, no response. Now there is no output at any time.... ???

Dear pyscripter : Ok, this is what I am doing at this moment, nothing spectactular, just like examples : 1 (Main-)Form 1 TPythonEngine 1 TPythonGUIInputOutput 1 TPythonDelphiVar 3 TMemos (Python-Script(Input),GUI-IO, DelphiVar-IO(later)) 1 Button to Start Script Thats all on Components Button-ClickEvent : PythonEngine1.ExecuteString(Memo1.Lines); Python-Script itself : #------------------- import time for i in range(1,5) : print(i) time.sleep(1) print("Done ...") #------------------- Running this under FireMonkey(Win64) : Memo2(GUI-IO) is updated after 5 seconds - DelayWrites doesn't change behaviour Running this under VCL(Win64) : Memo2(GUI-IO) is updated every second (as expected) Did you mean that FMX did not repaint after pyscipt::print(), but VCL did?

Dear all, in addition to my last post I want to say, that the problem (no print() output during script execution) is a behaviour, that seems to happens under FMX development, using VCL I got a normal print() as expected every second. @pyscripter : You know a reason why ? Thanks in advance for your answer. Sincerely Dirk

Dear all, I thank you all for your manifold answers, informations and discussions, I have experienced for sometimes in the last months and I saw the problem, that I have tried to explain, maybe not in the best matter. My task is to build up a GUI-Application on existing python scripts, and therefore Multithreading is not a central question. Pragmatically it will be used/implemented if it is neccessary. I have understood the GIL system and therefore my goal is not! a multithreading application, but 1. Delphi GUI-Thread is not blocked 2. Interaction between python-script and Delphi application during script execution, this means at first - output from script was given to TPython(GUI)InputOutput immediatly - Setting a value to a variable like myVar01.value in Delphi was registered in Python-Script during execution and vice versa In my tests/experience (without using) TPythonThread a script like : ----------------------------------------------------- for i in range(1,10): print(i) myVal01.value=i //(DelphiVar) time.sleep(1) ----------------------------------------------------- generates : - print()-output on TPython(GUI)InputOutput - changes on myValue via notify both first after!! execution of the whole scipt, which means in this example 10 seconds So the first problem (blocked GUI) can be solved easily by using TPythonThread. But I just don't see the solution to get response/interaction from the script during execution, my sorrow, that there also I have to wait finishing the script (e.g. for response for 10 seconds) when it is running in a thread. If this is running, everything is fine for me, independent from multithreading or not. At this point I am asking me if I have overlooked somthing. Thanks for the direct hint on TPythonThread and IO... and any hint that will come ... Sincerely Dirk

Dear all, after testing Python4Delphi which is, I think, a good bridge/library between these two worlds, I would like to know if it is right that on standard, the python scripts are running in the main thread of the program, so that the GUI is blocked as long as the python script is running and that there are also no callback (NotifyEvents) available during this time. This is the behavior that I observed. Or is there a switch/paramter on e.g. TPythonEngine so that interprocess GUI communication is available during python script execution? If communication is only possible when the script execution is running in a seperate thread, what is about TPythonGUIInputOutput and the interprocess communication ? Does it mean that this class as GUI object is always executed in main thread and therefore it is not threadsafe? Thanks for your kind answers Sincerely Dirk

Hi everybody, I just have to develope some GUI for existing python script which are using python's subprocess. On testing with python4delphi and TPythonGUIInputOutput it seem's that python.subprocess is ignored and never called. Any idea to run and access on subprocess-modules or is it not possible with python4delphi. Thanks in advance Dirk