new_contents: """Contains all of the exceptions used in NBConvert explicitly"""
  #-----------------------------------------------------------------------------
  # Copyright (c) 2013, the IPython Development Team.
  #
  # Distributed under the terms of the Modified BSD License.
  #
  # The full license is in the file COPYING.txt, distributed with this software.
  #-----------------------------------------------------------------------------
  
  #-----------------------------------------------------------------------------
  # Imports
  #-----------------------------------------------------------------------------
  from __future__ import print_function
  
  #-----------------------------------------------------------------------------
  # Classes and functions
  #-----------------------------------------------------------------------------
  class ConversionException(Exception):
      """An exception raised by the conversion process."""
  
      pass
subject: Create exceptions file to house all of the convert specific exceptions. Refactored 'exporter' Lots of changes....