old_contents: import datetime
  
  
  def uctnow():
      return datetime.datetime.utcnow()
  
  
  class Timer:
      def __init__(self):
          """ 
          Start the timer
          """
          self.start = uctnow()
  
  
      def get_elapsed(self):
          """
          Return the time spent in milliseconds
          """
          delta = uctnow - self.start
          return delta.microseconds / 1000.0
  
new_contents: import datetime
  
  
  def uctnow():
      return datetime.datetime.utcnow()
  
  
  class Timer:
      def __init__(self):
          """ 
          Start the timer
          """
          self.start = uctnow()
  
  
      def get_elapsed(self):
          """
          Return the time spent in milliseconds
          """
          delta = uctnow() - self.start
          return delta.microseconds / 1000.0
  
subject: fix typo.