old_contents: 
  from job import Job
  
  class Jobs:
  
      def __init__(self, connection):
          self.connection = connection
  
  
      def __str__(self):
          return "%s" % self.jobs
  
new_contents: 
  from job import Job
  
  class Jobs:
  
      def __init__(self, connection):
          self.connection = connection
  
      def __str__(self):
          return "%s" % self.connection.getJobs().keys()
  
subject: print the job ids