old_contents: from __future__ import unicode_literals
  
  
  class Task(object):
  
      def __init__(self, number, description, maxPoints):
          self.number = number
          self.description = description
          self.maxPoints = maxPoints
  
new_contents: from __future__ import unicode_literals
  
  
  class Task(object):
  
      def __init__(self, number, description, maxPoints, reachedPoints):
          self.number = number
          self.description = description
          self.maxPoints = maxPoints
          self.reachedPoints = reachedPoints
  
subject: Add a variable to hold reached points