Python 2.x when used with protocol 2 or lower. The reorganization of the
standard library changed the formal reference for many objects. For
example, ``__builtin__.set`` in Python 2 is called ``builtins.set`` in Python
- 3. This change cofounded efforts to share data between different versions of
+ 3. This change confounded efforts to share data between different versions of
Python. But now when protocol 2 or lower is selected, the pickler will
automatically use the old Python 2 names for both loading and dumping. This
remapping is turned-on by default but can be disabled with the *fix_imports*