property源码帮助
"""
Typical use is to define a managed attribute x:
class C(object):
def getx(self): return self._x
def setx(self, value): self._x = value
def delx(self): del self._x
x = property(getx, setx, delx, "I'm the 'x' property.")
Decorators make defining new properties or modifying existing ones easy:
class C(object):
@property
def x(self):
"I am the 'x' property."
return self._x
@x.setter
def x(self, value):
self._x = value
@x.deleter
def x(self):
del self._x
"""
class Person:
def __init__(self, chinese, english, history):
self._chinese = chinese
self._eng = english
self.__his = history
def getscore(self):
return (self._chinese, self._eng, self.__his)
def gethis(self): # getter 可读
return self.__his
def sethis(self, value): # setter 可写
self.__his = value
def geteng(self): # 只读属性
return self._eng
@property # 将下面方法变成类型属性那样可以直接访问他,根据property源码中帮助着写
def chinese(self):
return self._chinese
@chinese.setter # 将下面方法中的属性进行修改
def chinese(self,value):
self._chinese = value
@chinese.deleter
def chinese(self):
#del self._chinese
print('del chinese')
student1 = Person(80, 90, 88)
# print(student1.gethis())
print(student1.chinese)
# 将方法当做属性应用
student1.chinese = 100
print(student1.chinese)
del student1.chinese
#+++++++++++++++++++++++++优雅
class Person:
def __init__(self, chinese, english, history):
self._chinese = chinese
self._eng = english
self.__his = history
def getscore(self):
return (self._chinese, self._eng, self.__his)
def gethis(self): # getter 可读
return self.__his
def sethis(self, value): # setter 可写
self.__his = value
def geteng(self): # 只读属性
return self._eng
@property # 将下面方法变成类型属性那样可以直接访问他,根据property源码中帮助着写
def chinese(self):
return self._chinese
@chinese.setter # 将下面方法中的属性进行修改
def chinese(self,value):
self._chinese = value
@chinese.deleter
def chinese(self):
#del self._chinese
print('del chinese')
eng = property(lambda self:self._eng, seteng)
student1 = Person(80, 90, 88)
# print(student1.gethis())
print(student1.chinese)
# 将方法当做属性应用
student1.chinese = 100
print(student1.chinese)
print(student1.eng)
student1._eng = 200
print(student1.eng)
