Python多继承三种情况

• Case1（基类都未考虑多继承的情况）
• Case 2（混合继承类）
• Case 3（多继承设计类）

1. 知道super.__init__和类名.__init__两者的区别
2. 默认对python多继承和继承有一定的基础
3. 默认知道继承__mro__

class Person(object):
    def __init__(self, name):
        self.name = name

class Human(object):
    def __init__(self, sex):
        self.sex = sex

class Student(Person, Human): # 基类都独立未考虑多继承情况
    def __init__(self, name ,sex):
        Person.__init__(self,name)
        Human.__init__(self,sex)

if __name__ == '__main__':
    a = Student('xiaoming','female')
    print(a.name)
    print(a.sex)

class Person(object):
    def __init__(self, name, *args):
        self.name = name

class Human(object):
    def __init__(self, sex, *args):
        self.sex = sex

class Student(Person, Human):
    def __init__(self,name, sex):
        super().__init__(name, sex)


if __name__ == '__main__':
    a = Student('xiaoming', 'female')
    print(a.name)
    print(a.sex) # error》'Student' object has no attribute 'sex'
#这里会报错，根据mro方法解析顺序，Person被初始化后，没有继续调用super()进行初始化 Human，拿不到sex属性？（此处是我自己的理解，欢迎讨论。）

class Person(object):
    def __init__(self, name):
        self.name = name

class Human(object):
    def __init__(self, sex, *agrs):
        self.sex = sex
        super().__init__(*agrs)

class Student(Human, Person): # 顺序必须对，不然Person不能被初始化
    def __init__(self,sex, name):
        super().__init__(sex, name)

if __name__ == '__main__':
    a = Student( 'female', 'xiaoming')
    print(a.name)
    print(a.sex)

class Person(object):
    def __init__(self, name,*args):
        self.name = name
        super().__init__(*args)

class Human(object):
    def __init__(self, sex, *args):
        self.sex = sex
        super().__init__()

class Student(Person, Human):
    def __init__(self, name, sex):
        super().__init__(name, sex)

if __name__ == '__main__':
    a = Student( 'female', 'xiaoming')
    print(a.name)
    print(a.sex)