docs: def duration_to_timedelta(obj):
      """Converts duration to timedelta
  
      >>> duration_to_timedelta("10m")
      >>> datetime.timedelta(0, 600)
      """
      matches = DURATION_PATTERN.search(obj)
      matches = matches.groupdict(default="0")
      matches = {k: int(v) for k, v in matches.items()}
      return timedelta(**matches)