Asynchronously redirect stdout/stdin from embedded python to c++?

Question

I am essentially trying to write a console interface with input and output for an embedded python script. Following the instructions here, I was able to capture stdout:

Answer 1

Easiest way I found so far to do this is as follows:

PyObject *sys = PyImport_ImportModule("sys");
PyObject* io_stdout = PyFile_FromFile(stdout, "stdout", "a", nullptr);
PyObject_SetAttrString(sys, "stdout", io_stdout);
PyObject* io_stderr = PyFile_FromFile(stderr, "stderr", "a", nullptr);
PyObject_SetAttrString(sys, "stderr", io_stderr);
PyObject* io_stdin = PyFile_FromFile(stdin, "stdin", "r", nullptr);
PyObject_SetAttrString(sys, "stdin", io_stdin);

you can test it with:

# for test
PyRun_SimpleString("print sys.stdin.readline()");