调用父类的 super(本类类型,self当前实例对象).__init__(父类参数)

明白自己的错误了，太大意

class Person():

    def __init__(self,name,gender):

        self.name=name

        self.gender=gender

    def whoAmI(self):

        return 'I am a Person, my name is %s'% self.name

class Student(Person):

    def __init__(self,name,gender,score):

        super(Student,self).__init__(name,gender)

        self.score=score

    def whoAmI(self):

        return 'I am a Person, my name is %s'% self.name

class Teacher(Person):

    def __init__(self,name,gender,score):

        super(Teacher,self).__init__(name,gender)

    def whoAmI(self):

        return 'I am a Person, my name is %s'% self.name

def who_am_i(x):

    print (x.whoAmI())

p=Person('Tim','Male')

s=Student('Bob','Male',88)

t=Teacher('Alice','Female','English')

who_am_i(p)

who_am_i(s)

who_am_i(t)