@property
def width(self):
return self.__width
@width.setter
def width(self, value):
if not isinstance(value, (int,float)):
raise ValueError('Value is not legle')
if value <= 0:
raise ValueError('Value must > 0')
else:
self.__width = value
@property
def height(self):
return self.__height
@height.setter
def height(self, value):
if not isinstance(value, (int,float)):
raise ValueError('Value is not legle')
if value <= 0:
raise ValueError('Value must > 0')
else:
self.__height = value
@property
def resolution(self):
return self.__width*self.__height
测试1:
s = Screen()
s.width = '2212'
s.height = 0
print('resolution =', s.resolution)
if s.resolution == 786432:
print('测试通过!')
else:
print('测试失败!')
Value is not legle
测试2:
s = Screen()
s.width = 0
s.height = 123
print('resolution =', s.resolution)
if s.resolution == 786432:
print('测试通过!')
else:
print('测试失败!')
Value must > 0
测试3:
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!')
Gin阿金
class Screen(object):
测试1:
s = Screen() s.width = '2212' s.height = 0 print('resolution =', s.resolution) if s.resolution == 786432: print('测试通过!') else: print('测试失败!')
测试2:
s = Screen() s.width = 0 s.height = 123 print('resolution =', s.resolution) if s.resolution == 786432: print('测试通过!') else: print('测试失败!')
测试3:
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!')