A bit better example for pop, proving by observation of the test result that the argument to pop is relative to the left of the list, not the end.

rjo1970 · rjo1970 · commit 106e4476f0f8 · 2011-10-22T15:14:27.000-04:00
diff --git a/python 2/koans/about_lists.py b/python 2/koans/about_lists.py
@@ -71,7 +71,7 @@ def test_insertions(self):
         self.assertEqual(__, knight)  
             
     def test_popping_lists(self):
-        stack = [10, 20, 30]
+        stack = [10, 20, 30, 40]
         stack.append('last')
         
         self.assertEqual(__, stack)
diff --git a/python 3/koans/about_lists.py b/python 3/koans/about_lists.py
@@ -72,7 +72,7 @@ def test_insertions(self):
         self.assertEqual(__, knight)  
             
     def test_popping_lists(self):
-        stack = [10, 20, 30]
+        stack = [10, 20, 30, 40]
         stack.append('last')
         
         self.assertEqual(__, stack)
