new_contents: 
  import time
  
  # http://stackoverflow.com/questions/2487109/python-date-time-formatting
  # https://docs.python.org/2/library/datetime.html
  def yyyymmddhhmmss(before="",after="",now=time.localtime()):
    return before + time.strftime("%Y%m%d%H%M%S",now) + after
  
  def yyyymmddhhmm(before="",after="",now=time.localtime()):
    return before + time.strftime("%Y%m%d%H%M",now) + after
  
  if __name__ == "__main__":
    print yyyymmddhhmmss()
  
subject: Create yyyymmddhhmmss.py