Add `StatusCodeAsInt()`

For interoperability with other Python-C/C++ binding systems, including the raw Python C API.

Small follow-on to https://github.com/pybind/pybind11_abseil/commit/64e85ee3129638458368e5b9fdfa53b6dc16a859

PiperOrigin-RevId: 476405601

pybind11_abseil/register_status_bindings.cc

@@ -142,6 +142,11 @@ void RegisterStatusBindings(module m) {
       },
       },
       arg("code_int"));
       arg("code_int"));
 
 
+  m.def(
+      "StatusCodeAsInt",
+      [](const absl::StatusCode& code) { return static_cast<int>(code); },
+      arg("code"));
+
   class_<absl::Status>(m, "Status")
   class_<absl::Status>(m, "Status")
       .def(init())
       .def(init())
       .def(init([](InitFromTag init_from_tag, const object& obj) {
       .def(init([](InitFromTag init_from_tag, const object& obj) {

pybind11_abseil/tests/status_test.py

@@ -42,6 +42,9 @@ class StatusCodeTest(absltest.TestCase):
     self.assertEqual(
     self.assertEqual(
         str(ctx.exception), 'code_int=9876 is not a valid absl::StatusCode')
         str(ctx.exception), 'code_int=9876 is not a valid absl::StatusCode')
 
 
+  def test_status_code_as_int(self):
+    self.assertEqual(status.StatusCodeAsInt(status.StatusCode.UNAVAILABLE), 14)
+
 
 
 class StatusTest(parameterized.TestCase):
 class StatusTest(parameterized.TestCase):