code: def _to_rfc822(date):
      
      months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
                'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
      days = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
      fmt = '{day}, {d:02} {month} {y:04} {h:02}:{m:02}:{s:02} GMT'
      return fmt.format(
          day=days[date.weekday()],
          d=date.day,
          month=months[date.month - 1],
          y=date.year,
          h=date.hour,
          m=date.minute,
          s=date.second,
      )
docs: _to_rfc822(datetime.datetime) -> str
      The datetime `strftime` method is subject to locale-specific
      day and month names, so this function hardcodes the conversion.