Update gotchas.rst

ryanchants · ryanchants · commit c3de9df0fffe · 2015-10-12T21:41:30.000-05:00
Previous test block did not show code blocks in markdown view.
diff --git a/docs/writing/gotchas.rst b/docs/writing/gotchas.rst
@@ -23,7 +23,7 @@ Python's treatment of mutable default arguments in function definitions.
 What You Wrote
 ~~~~~~~~~~~~~~
 
-.. testcode::
+.. code-block:: python
 
     def append_to(element, to=[]):
         to.append(element)
@@ -32,7 +32,7 @@ What You Wrote
 What You Might Have Expected to Happen
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-.. testcode::
+.. code-block:: python
 
     my_list = append_to(12)
     print my_list
