#1715: include sub-extension modules in pydoc text output.
diff --git a/Lib/test/pydocfodder.py b/Lib/test/pydocfodder.py
index becdf22..2cf1cbd 100644
--- a/Lib/test/pydocfodder.py
+++ b/Lib/test/pydocfodder.py
@@ -1,5 +1,7 @@
 """Something just to look at via pydoc."""
 
+import types
+
 class A_classic:
     "A classic class."
     def A_method(self):
@@ -208,3 +210,7 @@
             del inst.desc[self.attr]
 
     x = property(get_desc('x'), set_desc('x'), del_desc('x'), 'prop x')
+
+
+submodule = types.ModuleType(__name__ + '.submodule',
+    """A submodule, which should appear in its parent's summary""")