old_contents: 
  from dateutil.tz import tzutc
  
  utc = tzutc()
  
  def now():
      """
      Return a datetime object representing the current time in UTC
      """
      return datetime.now(utc)
  
  
new_contents: 
  
  from datetime import datetime
  from dateutil.tz import tzutc
  
  utc = tzutc()
  
  def now():
      """
      Return a datetime object representing the current time in UTC
      """
      return datetime.now(utc)
  
  
subject: fix utc bug