mpl 1.3.1 install issues with py3.3

pip install of mpl 1.3.1 has issues.
It wants to install nose, but seems to be incompatible with py3.3:

  Running setup.py install for nose
      File "/home/nbecker/.local/lib/python3.3/site-
packages/nose/plugins/base.py", line 70
        except OptionConflictError, e:
                                  ^
    SyntaxError: invalid syntax
    
      File "/home/nbecker/.local/lib/python3.3/site-
packages/nose/plugins/multiprocess.py", line 481
        except (KeyboardInterrupt, SystemExit), e:
                                              ^
    SyntaxError: invalid syntax

This isn’t a matplotlib bug. Somehow, a py2.x version of nose got into your python3.3 site-packages. Try clearing that out first. Of course, it might still be possible that we are somehow forcing the wrong nose to be installed…