"使用 Python4Delphi 组件时未找到 python33.dll 错误"

Question

I'm working on a project with Python4Delphi component and also i want to use embedded version of python which is better to use as needs no installation. I've set the correct path and filename to python310.dll in the appropriate properties but no chance to run properly and always getting the

Error 87: Could not open Dll "python33.dll"

Python could not be properly initialized. We must quit.

Answer 1

I had the same issue. Reinstall python worked for me. But this time i maked sure that was installing the same architecture that i was compiling the code to. I reinstall python 3.10 on 32bits and worked for me, cuz i was compiling on win32

Answer 2

There is an error in pythonengine.pas. on line 9075 change

MinorVersion := PythonVersion[3];

to

MinorVersion := StrToInt(copy(PythonVersion, 3, length(PythonVersion) - 2));

the MinorVersion is incorrectly set to 1 for version 3.10.

Answer 3

LS, I made the correction proposed by Bahktari\/Franse in file pythonengine.pas, recompiled the package, removed\/replaced the Python_D260.bpl package but still got the same error. in P4D Demo1 runs but crashes ("violation"), Demo2 fails, P4DTests still gives python33.dll error.

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