code: def get_now_datetime_filestamp(longTime=False):
      
      ## > IMPORTS ##
      from datetime import datetime, date, time
      now = datetime.now()
      if longTime:
          now = now.strftime("%Y%m%dt%H%M%S%f")
      else:
          now = now.strftime("%Y%m%dt%H%M%S")
  
      return now
docs: *A datetime stamp to be appended to the end of filenames: ``YYYYMMDDtHHMMSS``*
  
      **Key Arguments:**
          - ``longTime`` -- make time string longer (more change of filenames being unique)
  
      **Return:**
          - ``now`` -- current time and date in filename format
  
      **Usage:**
          .. code-block:: python 
  
              from fundamentals.download import get_now_datetime_filestamp
              get_now_datetime_filestamp(longTime=False)
              #Out: '20160316t154635'
  
              get_now_datetime_filestamp(longTime=True)
              #Out: '20160316t154644133638'