Ticket #14698: python_import_misses.diff

django/utils/module_loading.py

@@ -6 +6 @@
 def module_has_submodule(package, module_name):
     """See if 'module' is in 'package'."""
     name = ".".join([package.__name__, module_name])
-    if name in sys.modules:
-        return True
+    try:
+        return sys.modules[name] is not None
+    except KeyError:
+        pass
     for finder in sys.meta_path:
         if finder.find_module(name):
             return True