const char* fmt, ...) {

ErrorGuard guard;

static PyObject* kwnames = NULL;

if (!kwnames) {

kwnames = Py_BuildValue("(s)", "exc_info");

if (!kwnames) return;

}

static PyObject* logging = NULL;

if (!logging) {

logging = try_import("logging").release();

if (!logging) return;

}

va_list a;

va_start(a, fmt);

char buf[1024];

PyOS_vsnprintf(buf, sizeof buf, fmt, a);

va_end(a);

PyPtr formatted_message = steal(PyUnicode_FromFormat("%s:%d: %s", filename, line, buf));

if (!formatted_message) return;

PyPtr func = getattr(logging, level);

if (!func) return;

// Pretend that we have caught the exception so that the logger can print it

PyObject *old_excinfo_type, *old_excinfo_value, *old_excinfo_tb;

PyErr_GetExcInfo(&old_excinfo_type, &old_excinfo_value, &old_excinfo_tb);

exc.normalize();

PyErr_SetExcInfo(Py_XNewRef(exc.type.get()), Py_XNewRef(exc.value.get()),

Py_XNewRef(exc.traceback.get()));

PyObject* args[2] = {formatted_message.get(), Py_True};

PyObject* res = PyObject_Vectorcall(func.get(), args, 1, kwnames);

Py_XDECREF(res);

PyErr_SetExcInfo(old_excinfo_type, old_excinfo_value, old_excinfo_tb);