使用 pybind11 嵌入 python。虚拟环境不起作用

我正在尝试制作一个简单的C 应用程序，该应用程序使用googletrans Python库翻译短语。因此，为此，我选择了 pybind11 嵌入Python 。我也将cmake用于代码配置。

当我使用全局Python安装时，一切正常，但是我不明白如何使用Pybind 以及设置正确的Python解释器，路径等的整个过程。在cmake中。

我找到了这个stackoverflow线程：用虚拟环境嵌入pybind11

我像@ipa一样设置所有变量。只需查看CMakeLists.txt和main.cpp：

cmake_minimum_required(VERSION 3.15)
project("cpp_google_trans")
set(
    PYTHON_EXECUTABLE "${CMAKE_HOME_DIRECTORY}/venv/Scripts/python.exe"
    CACHE FILEPATH "python virtual environment executable")
message(STATUS "PYTHON_EXECUTABLE is now: ${PYTHON_EXECUTABLE}")    #DEBUG
set(ENV{PYTHONPATH} "${CMAKE_HOME_DIRECTORY}/venv/Lib/site-packages")
message(STATUS "ENV{PYTHONPATH} is now: $ENV{PYTHONPATH}")  #DEBUG
set(
    ENV{PATH}
    "${CMAKE_HOME_DIRECTORY}/venv/Scripts/;${CMAKE_HOME_DIRECTORY}/venv/Lib"
)
message(STATUS "PATH is now: $ENV{PATH}")   #DEBUG
add_subdirectory(pybind11)
add_executable(app main.cpp)
target_link_libraries(app PRIVATE pybind11::embed)

main.cpp：

#include <iostream>
#include <string>
#include <pybind11/embed.h>
namespace py = pybind11;
int main() {
    py::scoped_interpreter guard{};
    auto sys = py::module::import("sys");
    py::print("Hello, World from Python!");
    py::print(sys.attr("executable"));
    py::print(sys.attr("version"));
    system("set PATH");
    std::cin.get();
    // system("powershell");
    // I was looking at the environment variables in the powershell, but there wasn't any variables I set in CMakeLists.txt
    // Here I get abort() when trying to import googletrans package.
    // The package is installed in the venv virtual environment.
    // When the package is installed globally there isn't any problem.
    py::object Translator = py::module::import("googletrans").attr("Translator");
    py::object translator = Translator();
    std::cout << "C++ program here!nTell a phrase you want to translate to english: ";
    std::string phrase;
    std::getline(std::cin, phrase);
    std::cout << "nnThe phrase in english means: ";
    std::cout << translator.attr("translate")(py::cast(&phrase)).attr("text").cast<std::string>();
}

查看cmake配置输出时，一切似乎都很好(而不是pythonlibs变量，我不知道如何更改(：

-- Building for: Visual Studio 16 2019
-- The C compiler identification is MSVC 19.22.27812.2
-- The CXX compiler identification is MSVC 19.22.27812.2
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Preview/VC/Tools/MSVC/14.22.27812/bin/Hostx64/x64/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Preview/VC/Tools/MSVC/14.22.27812/bin/Hostx64/x64/cl.exe -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Preview/VC/Tools/MSVC/14.22.27812/bin/Hostx64/x64/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Preview/VC/Tools/MSVC/14.22.27812/bin/Hostx64/x64/cl.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- PYTHON_EXECUTABLE is now: D:/dev/Pybind/cpp_google_trans2/venv/Scripts/python.exe
-- ENV{PYTHONPATH} is now: D:/dev/Pybind/cpp_google_trans2/venv/Lib/site-packages
-- PATH is now: D:/dev/Pybind/cpp_google_trans2/venv/Scripts/;D:/dev/Pybind/cpp_google_trans2/venv/Lib    
-- Found PythonInterp: D:/dev/Pybind/cpp_google_trans2/venv/Scripts/python.exe (found version "3.7.3")    
-- Found PythonLibs: D:/Programs/VisualStudio/Shared/Python37_64/libs/Python37.lib
-- pybind11 v2.3.dev1
-- Configuring done
-- Generating done
-- Build files have been written to: D:/dev/Pybind/cpp_google_trans2/build

我还试图通过control panel>system and security>system>advanced system settings>advanced>environment variables在全球范围内设置Python_executable和路径环境变量，但即使这也无济于事。

我仍然是Cmake，Python和Pybind11的新手，我知道我不知道很多事情。也许您在阅读此线程时注意到了这一点。; p