mirror of https://github.com/python/cpython
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/* Example of embedding Python in another program */
|
|
|
|
#include "Python.h"
|
|
|
|
PyObject* PyInit_xyzzy(void); /* Forward */
|
|
|
|
main(int argc, char **argv)
|
|
{
|
|
/* Ignore passed-in argc/argv. If desired, conversion
|
|
should use mbstowcs to convert them. */
|
|
wchar_t *args[] = {L"embed", L"hello", 0};
|
|
|
|
/* Pass argv[0] to the Python interpreter */
|
|
Py_SetProgramName(args[0]);
|
|
|
|
/* Add a static module */
|
|
PyImport_AppendInittab("xyzzy", PyInit_xyzzy);
|
|
|
|
/* Initialize the Python interpreter. Required. */
|
|
Py_Initialize();
|
|
|
|
/* Define sys.argv. It is up to the application if you
|
|
want this; you can also leave it undefined (since the Python
|
|
code is generally not a main program it has no business
|
|
touching sys.argv...)
|
|
|
|
If the third argument is true, sys.path is modified to include
|
|
either the directory containing the script named by argv[0], or
|
|
the current working directory. This can be risky; if you run
|
|
an application embedding Python in a directory controlled by
|
|
someone else, attackers could put a Trojan-horse module in the
|
|
directory (say, a file named os.py) that your application would
|
|
then import and run.
|
|
*/
|
|
PySys_SetArgvEx(2, args, 0);
|
|
|
|
/* Do some application specific code */
|
|
printf("Hello, brave new world\n\n");
|
|
|
|
/* Execute some Python statements (in module __main__) */
|
|
PyRun_SimpleString("import sys\n");
|
|
PyRun_SimpleString("print(sys.builtin_module_names)\n");
|
|
PyRun_SimpleString("print(sys.modules.keys())\n");
|
|
PyRun_SimpleString("print(sys.executable)\n");
|
|
PyRun_SimpleString("print(sys.argv)\n");
|
|
|
|
/* Note that you can call any public function of the Python
|
|
interpreter here, e.g. call_object(). */
|
|
|
|
/* Some more application specific code */
|
|
printf("\nGoodbye, cruel world\n");
|
|
|
|
/* Exit, cleaning up the interpreter */
|
|
Py_Exit(0);
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
/* A static module */
|
|
|
|
/* 'self' is not used */
|
|
static PyObject *
|
|
xyzzy_foo(PyObject *self, PyObject* args)
|
|
{
|
|
return PyLong_FromLong(42L);
|
|
}
|
|
|
|
static PyMethodDef xyzzy_methods[] = {
|
|
{"foo", xyzzy_foo, METH_NOARGS,
|
|
"Return the meaning of everything."},
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
static struct PyModuleDef xyzzymodule = {
|
|
{}, /* m_base */
|
|
"xyzzy", /* m_name */
|
|
0, /* m_doc */
|
|
0, /* m_size */
|
|
xyzzy_methods, /* m_methods */
|
|
0, /* m_reload */
|
|
0, /* m_traverse */
|
|
0, /* m_clear */
|
|
0, /* m_free */
|
|
};
|
|
|
|
PyObject*
|
|
PyInit_xyzzy(void)
|
|
{
|
|
return PyModule_Create(&xyzzymodule);
|
|
}
|