一：方式1
指名道姓调用某一个类下的函数 ==> 不依赖于继承关系
class OldboyPeople:
school = 'OldBoy'
def __init__(self, name, age, sex):
self.name = name
self.age = age
self.sex = sex
def f1(self):
print(f'{self.name} say hello')
class Student(OldboyPeople):
def choose_course(self):
print('学生%s 正在选课' % self.name)
class Teacher(OldboyPeople):
# 老师的空对象，'egon',18,'male',3000,10
def __init__(self, name, age, sex, salary, level):
# 方式1：# 指名道姓地跟父类OldboyPeople去要__init__
# OldboyPeople.__init__(self, name, age, sex)
self.salary = salary
self.level = level
def score(self):
print('老师 %s 正在给学生打分' % self.name)
print(Teacher.mro()) # [<class '__main__.Teacher'>, <class '__main__.OldboyPeople'>, <class 'object'>]
二：方式2
super()调用父类提供给自己的方法 ==> 严格依赖继承关系
class OldboyPeople:
school = 'OldBoy'
def __init__(self, name, age, sex):
self.name = name
self.age = age
self.sex = sex
def f1(self):
print(f'{self.name} say hello')
class Student(OldboyPeople):
def choose_course(self):
print('学生%s 正在选课' % self.name)
class Teacher(OldboyPeople):
# 老师的空对象，'egon',18,'male',3000,10
def __init__(self, name, age, sex, salary, level):
# 方式2：# 调用super()会得到一个特殊的对象，该对象会参照当前类的mro，去当前类的父类里找属性
super().__init__(name, age, sex) # 调用的是方法，自动传入对象
self.salary = salary
self.level = level
def score(self):
print('老师 %s 正在给学生打分' % self.name)
print(Teacher.mro()) # [<class '__main__.Teacher'>, <class '__main__.OldboyPeople'>, <class 'object'>]
class A:
def test(self):
super().test()
class B:
def test(self):
print('from B')
class C(A, B):
pass
print(A.mro()) # [<class '__main__.A'>, <class 'object'>]
print(B.mro()) # [<class '__main__.B'>, <class 'object'>]
print(C.mro()) # 在代码层面A并不是B的子类，但从MRO列表来看，属性查找时，就是按照顺序C->A->B->object，B就相当于A的“父类”
# [<class '__main__.C'>, <class '__main__.A'>, <class '__main__.B'>,<class ‘object'>]
obj = C()
obj.test() # 属性查找的发起者是类C的对象obj，所以中途发生的属性查找都是参照C.mro()
# from B
class A:
def test(self):
print('from A')
super().test1()
class B:
def test1(self):
print('from B')
class C(A, B):
def test1(self):
print('from C')
print(C.mro()) # 在代码层面A并不是B的子类，但从MRO列表来看，属性查找时，就是按照顺序C->A->B->object，B就相当于A的“父类”
# [<class '__main__.C'>, <class '__main__.A'>, <class '__main__.B'>,<class ‘object'>]
obj = C()
obj.test() # 属性查找的发起者是类C的对象obj，所以中途发生的属性查找都是参照C.mro()
三：使用须知
super()和之前的方法不能混用，只能用其中一种
