How to prevent Py_Finalize closing stderr?

I have a c++ code that loads a python interepter which uses stderr:

intereptor.pyx
stderr_dup = os.fdopen(sys.stderr.fileno(), 'wb', 0)

The problem is that after Py_Finalize is called, stderr is closed and I can't use it in c++.
should I just reopen it in c++ by

open(stderr)

Or I can prevent this behaviour from the python side (os.dup/dup2)?
I tired replacing the above fdopen with:

stderr_dup = os.dup(sys.stderr.fileno())

But Py_Finalize still closes stderr.

You can solve this from the Python side far more easily:

stderr_dup = os.fdopen(sys.stderr.fileno(), 'wb', 0, closefd=False)

From the documentation:

> If closefd is False and a file descriptor rather than a filename was given, the underlying file descriptor will be kept open when the file is closed.

You could dup stderr into an additional file descriptor, and then set that file descriptor as stderr once the Python stuff is finished.

int stderr_copy = dup(stderr);
// ... Python ...
dup2(stderr_copy, stderr);