working in port iptyhon to python3
-> next modules are ready
  IPython/config/loader.py
  IPython/core/application.py
  IPython/core/debugger.py
  IPython/core/ultratb.py
  IPython/external/Itpl.py
  IPython/utils/PyColorize.py
  IPython/utils/coloransi.py
  IPython/utils/importstring.py
  IPython/utils/io.py
  IPython/utils/ipstruct.py
  IPython/utils/path.py
  IPython/utils/process.py
  IPython/utils/rlineimpl.py

->I am working in 
  IPython/utils/traitlets.py

the references to make this changes are
http://docs.python.org/release/3.0.1/whatsnew/3.0.html
http://diveintopython3.org/porting-code-to-python-3-with-2to3.html
http://ipython.scipy.org/doc/stable/html/development/overview.html#porting-to-3-0

The changes are syntatic most of the cases and some varibales names were also changed.
Every change was commented avobe the code keeping the original comment.