docs: def fromxldate(xldate, datemode=1):
      """Return a python datetime object
  
      xldate: float
          The xl number.
  
      datemode: int
          0: 1900-based, 1: 1904-based. See xlrd documentation.
      """
  
      t = xlrd.xldate_as_tuple(xldate, datemode)
      return datetime.datetime(*t)