def METHOD_NAME(self):
    """
    Retrieves the presence of the PSU
    Returns:
        bool: True if PSU is present, False if not
    """        
    presence_path="{}{}".format(self.cpld_path, 'psu_present')
    val=self._api_helper.read_txt_file(presence_path)
    if val is not None:
        return int(val, 10) == 1
    else:
        return 0