Import MutableSequence from collections.abc on Python 3. (#6272)

Fixes protocolbuffers/protobuf#5335.
balabit-deps · Jan 27, 2021 · 1dcc76c · 1dcc76c
1 parent e526d3d
commit 1dcc76c
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/python/google/protobuf/pyext/message.cc b/python/google/protobuf/pyext/message.cc
@@ -2957,8 +2957,12 @@ bool InitProto2MessageModule(PyObject *m) {
         reinterpret_cast<PyObject*>(
             &RepeatedCompositeContainer_Type));
 
-    // Register them as collections.Sequence
+    // Register them as MutableSequence.
+#if PY_MAJOR_VERSION >= 3
+    ScopedPyObjectPtr collections(PyImport_ImportModule("collections.abc"));
+#else
     ScopedPyObjectPtr collections(PyImport_ImportModule("collections"));
+#endif
     if (collections == NULL) {
       return false;
     }