class Time: def __init__( self, hour = 0, minute = 0, second = 0 ): self.hour = hour self.minute = minute self.second = second
def __setattr__( self, name, value ): if name == "hour": if 0 <= value < 24: self.__dict__[ "_hour" ] = value else: raise ValueError, "Invalid hour value: %d" % value
elif name == "minute" or name == "second": if 0 <= value < 60: self.__dict__[ "_" + name ] = value else: raise ValueError, "Invalid %s value: %d" % ( name, value )
else: self.__dict__[ name ] = value
def __getattr__( self, name ): if name == "hour": return self._hour elif name == "minute": return self._minute elif name == "second": return self._second else: raise AttributeError, name
