docs: def now(format_string):
      """
      Displays the date, formatted according to the given string.
  
      Uses the same format as PHP's ``date()`` function; see http://php.net/date
      for all the possible values.
  
      Sample usage::
  
          It is {% now "jS F Y H:i" %}
      """
      from datetime import datetime
      from django.utils.dateformat import DateFormat
      return DateFormat(datetime.now()).format(self.format_string)