old_contents: """
  
  File: tempo_event.py
  
  Purpose: Defines a tempo as an Event  
  
  """
  from timemodel.event import Event
  from timemodel.position import Position
  
  
  class TempoEvent(Event):
      """
      Defines tempo as an Event, given a Tempo and a time position.
      """
  
      def __init__(self, tempo, time):
          """
          Constructor.
          
          Args:
            tempo:(Tempo) object.
            time: Postion.
          """
          if not isinstance(time, Position):
             raise Exception('time argument to TempoEvent must be Position not \'{0}\'.'.format(type(time)))
          Event.__init__(self, tempo, time)
          
      def tempo(self):
          return self.object.tempo
      
      def __str__(self):
          return '[{0}, Tempo({1})]'.format(self.time, self.object)
  
new_contents: """
  
  File: tempo_event.py
  
  Purpose: Defines a tempo as an Event  
  
  """
  from timemodel.event import Event
  from timemodel.position import Position
  
  
  class TempoEvent(Event):
      """
      Defines tempo as an Event, given a Tempo and a time position.
      """
  
      def __init__(self, tempo, time):
          """
          Constructor.
          
          Args:
            tempo:(Tempo) object.
            time: Postion.
          """
          if not isinstance(time, Position):
             raise Exception('time argument to TempoEvent must be Position not \'{0}\'.'.format(type(time)))
          Event.__init__(self, tempo, time)
  
      def tempo(self):
          return self.object.tempo
      
      def __str__(self):
          return '[{0}, Tempo({1})]'.format(self.time, self.object)
  
subject: Fix new line issue.