How can I import a module from specific directory?

[hebohang]

Hi, I want to use python38.dll instead of a specific interpreter. I can put the Lib and dll file in the same folder with exe file:

But when I try to move the Lib directory to a specific folder, It can't run:

The code I write:

const char* dir = "C:/WorkSpace/HEngine/Package/Scripts";

pybind11::initialize_interpreter(true, 1, &dir);
{
HEngine::Application::GetInstance().Run();
HEngine::Application::GetInstance().Clean();
}
pybind11::finalize_interpreter();

and the error I get:

Python path configuration:
  PYTHONHOME = (not set)
  PYTHONPATH = (not set)
  program name = 'python'
  isolated = 0
  environment = 1
  user site = 1
  import site = 1
  sys._base_executable = 'C:\\WorkSpace\\HEngine\\Engine\\Binaries\\Win64\\HEngineEditor.exe'
  sys.base_prefix = ''
  sys.base_exec_prefix = ''
  sys.executable = 'C:\\WorkSpace\\HEngine\\Engine\\Binaries\\Win64\\HEngineEditor.exe'
  sys.prefix = ''
  sys.exec_prefix = ''
  sys.path = [
    'C:\\WorkSpace\\HEngine\\Engine\\Binaries\\Win64\\python38.zip',
    '.\\DLLs',
    '.\\lib',
    'C:\\WorkSpace\\HEngine\\Engine\\Binaries\\Win64',
  ]
Fatal Python error: init_fs_encoding: failed to get the Python codec of the filesystem encoding
Python runtime state: core initialized
ModuleNotFoundError: No module named 'encodings'

Current thread 0x00002eb4 (most recent call first):
<no Python frame>

What can I do? Looking forward to your reply:)

[x3lif]

You need to add your dir variable to the interpreter PATH variable.
Personnally i add it to python with the following code in an initialize method jjust after creating the interpreter :

        std::stringstream ss;
        ss << "import sys" << std::endl;
        ss << "module_path = r\'" << dir << "\'" << std::endl;
        ss << "if module_path not in sys.path:" << std::endl;
        ss << "    sys.path.append(module_path) " << std::endl;

        py::dict globals = py::globals();
        pybind11::exec(ss.str(), globals, globals);

Then you just have to call your script as usual