# class Student(object):

# @property

# def score(self):

# return self._score

# @score.setter

# def score(self,value):

# if not isinstance(value, int):

# raise ValueError('score must be an integer!')

# if value < 0 or value > 100:

# raise ValueError('score must between 0 ~ 100!')

# self._score = value

class Screen(object):

@property

def getWidth(self):

return self.width

@getWidth.setter

def setWidth(self,wid):

self.width=wid

@property

def getHeight(self):

return self.height

@getHeight.setter

def setHeight(self,height):

self.height=height

@property

def resolution(self):

self._resolution=self.width*self.height

return self._resolution

# 测试:

s = Screen()

s.width = 1024

s.height = 768

print('resolution =', s.resolution)

if s.resolution == 786432:

print('测试通过!')

else:

print('测试失败!')