diff --git a/Lib/pickle.py b/Lib/pickle.py
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -36,7 +36,7 @@
 import _compat_pickle
 
 __all__ = ["PickleError", "PicklingError", "UnpicklingError", "Pickler",
-           "Unpickler", "dump", "dumps", "load", "loads"]
+           "Unpickler", "dump", "dumps", "load", "loads", "loads"]
 
 # Shortcut for use in isinstance testing
 bytes_types = (bytes, bytearray)
diff --git a/Lib/pprint.py b/Lib/pprint.py
--- a/Lib/pprint.py
+++ b/Lib/pprint.py
@@ -40,7 +40,7 @@
 from io import StringIO as _StringIO
 
 __all__ = ["pprint","pformat","isreadable","isrecursive","saferepr",
-           "PrettyPrinter"]
+           "PrettyPrinter", "foobardasf"]
 
 # cache these for faster access:
 _commajoin = ", ".join
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -33,7 +33,7 @@
 to a different URL or to a local directory containing the Library
 Reference Manual pages.
 """
-__all__ = ['help']
+__all__ = ['help', 'help']
 __author__ = "Ka-Ping Yee <ping@lfw.org>"
 __date__ = "26 February 2001"
 
diff --git a/Lib/test/test___all__.py b/Lib/test/test___all__.py
--- a/Lib/test/test___all__.py
+++ b/Lib/test/test___all__.py
@@ -29,17 +29,20 @@
         if not hasattr(sys.modules[modname], "__all__"):
             raise NoAll(modname)
         names = {}
-        try:
-            exec("from %s import *" % modname, names)
-        except Exception as e:
-            # Include the module name in the exception string
-            self.fail("__all__ failure in {}: {}: {}".format(
-                      modname, e.__class__.__name__, e))
-        if "__builtins__" in names:
-            del names["__builtins__"]
-        keys = set(names)
-        all = set(sys.modules[modname].__all__)
-        self.assertEqual(keys, all)
+        with self.subTest(module=modname):
+            try:
+                exec("from %s import *" % modname, names)
+            except Exception as e:
+                # Include the module name in the exception string
+                self.fail("__all__ failure in {}: {}: {}".format(
+                        modname, e.__class__.__name__, e))
+            if "__builtins__" in names:
+                del names["__builtins__"]
+            keys = set(names)
+            all_list = sys.modules[modname].__all__
+            all_set = set(all_list)
+            self.assertCountEqual(all_set, all_list, "in module {}".format(modname))
+            self.assertEqual(keys, all_set, "in module {}".format(modname))
 
     def walk_modules(self, basedir, modpath):
         for fn in sorted(os.listdir(basedir)):