Running python script from c ++

Just call the system () function from code and pass your script and its parameters.

system("python myscript.py"); 

The solution is certainly not very beautiful, but it works.

There is, in my opinion, a more correct solution - the use of the Python / C API ( introduction , documentation ). Your task is solved like this:

 //C code #include <Python.h> #include <cstring> #include <cstdio> int main() { Py_Initialize(); const char* script_path = "./script.py"; char* py_argv[] = {strdup(script_path), strdup("argument")}; PySys_SetArgv(2, py_argv); PyRun_SimpleFileEx(fopen(script_path, "r"), script_path, 1); free(py_argv[0]); free(py_argv[1]); Py_Finalize(); return 0; } 

=================

 #script.py import sys print sys.argv 

As a result, the console will display:

 ['./script.py', 'argument'] 

If the linux operating system, then man exec .

UPD: Example.

  #include <unistd.h> int main(){ std::string path = "/usr/bin/python"; std::string script = "/home/user/script.py"; std::string arg = "arg"; char* a[] = new char*[2]; a[0] = script.c_str(); a[1] = arg.c_str(); execvp(path.c_str(), a); std::cerr<<"cannot exec"<<endl; return 0; } 

UPD2: http://msdn.microsoft.com/en-us/library/431x4c1w%28v=vs.71%29.aspx
Perhaps this is what we need.

I agree with all the methods described above, but personally I would prefer to use boost :: python because IMHO is the easiest and most importantly the clean (code) way to make friends with Python .. as for the standard Python C / API, this is In most cases, the Stone Age, which requires quite a lot of time writing two-language spikes ...