如何解决使用嵌入式python运行C ++可执行程序
我在Windows 10上,已经安装了WinPython 64 3.8.5和Mingw w64。 我想从C ++调用python代码并开始使用以下示例代码:
#define PY_SSIZE_T_CLEAN
#include <Python.h>
int main(int argc,char *argv[])
{
wchar_t *program = Py_DecodeLocale(argv[0],NULL);
if (program == NULL) {
fprintf(stderr,"Fatal error: cannot decode argv[0]\n");
exit(1);
}
Py_SetProgramName(program); /* optional but recommended */
Py_Initialize();
PyRun_SimpleString("from time import time,ctime\n"
"print('Today is',ctime(time()))\n");
if (Py_FinalizeEx() < 0) {
exit(120);
}
PyMem_RawFree(program);
return 0;
}
编译过程顺利进行(g ++ myfile.cpp -Ipath / to / Python.h -Lpath / to / python38.lib -lpython38)
但是,在cmd中运行exe时(在该cmd中运行C:\Users\liebschs\Programs\WinPython64-3.8.5\WPy64-3850\scripts\env.batch
之后),出现以下错误:
Python path configuration:
PYTHONHOME = (not set)
PYTHONPATH = (not set)
program name = 'embed.exe'
isolated = 0
environment = 1
user site = 1
import site = 1
sys._base_executable = 'C:\\Users\\liebschs\\MyFiles\\playground\\VSprojects\\EmbedPython\\embed.exe'
sys.base_prefix = 'C:\\Users\\liebschs\\Programs\\WinPython64-3.8.5\\WPy64-3850\\python-3.8.5.amd64'
sys.base_exec_prefix = 'C:\\Users\\liebschs\\Programs\\WinPython64-3.8.5\\WPy64-3850\\python-3.8.5.amd64'
sys.executable = 'C:\\Users\\liebschs\\MyFiles\\playground\\VSprojects\\EmbedPython\\embed.exe'
sys.prefix = 'C:\\Users\\liebschs\\Programs\\WinPython64-3.8.5\\WPy64-3850\\python-3.8.5.amd64'
sys.exec_prefix = 'C:\\Users\\liebschs\\Programs\\WinPython64-3.8.5\\WPy64-3850\\python-3.8.5.amd64'
sys.path = [
'C:\\Users\\liebschs\\Programs\\WinPython64-3.8.5\\WPy64-3850\\python-3.8.5.amd64\\python38.zip','.\\DLLs','.\\lib','C:\\Users\\liebschs\\MyFiles\\playground\\VSprojects\\EmbedPython',]
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 0x000021c8 (most recent call first):
<no Python frame>
感谢您的帮助! 顺便说一句:
解决方法
与我在其他地方读到的内容相反,当我将PYTHONPATH和PYTHONHOME设置为python.exe时(在我的情况下为C:\Users\liebschs\Programs\WinPython64-3.8.5\WPy64-3850\python-3.8.5.amd64
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