new_contents: """Summary."""
  from __future__ import absolute_import
  
  
  class Fraction(object):
      """docstring for Fraction."""
  
      def __init__(self, numerator, denominator):
          """
          Constructor.
  
          Args:
              numerator (int): The numerator or top part of the fraction
              denominator (int): The denominator or bottom part of the fraction
          """
          self.top = numerator
          self.bottom = denominator
  
      def __str__(self):
          """
          Magic method for returning formatted fraction output.
  
          Returns:
              name (TYPE): Formatted instance
          """
          return "{} : {}/{}".format(self, self.top, self.bottom)
  
      def __unicode__(self):
          """
          Magic method for returning formatted fraction output.
  
          Returns:
              name (TYPE): Formatted instance
          """
          return "{} : {}/{}".format(self, self.top, self.bottom)
  
subject: create the Fraction class in utils