docs: def parse_datetime(dt, ignoretz=True, **kwargs):
      """
      :param dt: string datetime to convert into datetime object.
      :return: datetime object if the string can be parsed into a datetime.
          Otherwise, return None.
  
      :see: http://labix.org/python-dateutil
  
      Examples:
  
      >>> parse_datetime('2011-12-30 13:45:12 CDT')
      2011-12-30 13:45:12
      >>> parse_datetime('12/30/2011 13:45:12 CDT')
      2011-12-30 13:45:12
      >>> parse_datetime('2011-12-30 13:45:12 CDT', ignoretz=False)
      2011-12-30 13:45:12-06:00
      >>> parse_datetime('12/30/2011 13:45:12 CDT', ignoretz=False)
      2011-12-30 13:45:12-06:00
  
      """
      try:
          return parse(dt, ignoretz=ignoretz, **kwargs)
      except:
          return None