python - TypeError: __init__() 正好需要 4 个参数(给定 1 个)

Question

我需要帮助，我在 Python 中有以下继承类，但出现错误:

class Human:

    def __init__(self,name,surname,age):
        self.name = name
        self.surname = surname
        self.age = age

    def getName(self):
        return self.name

    def getSurname(self):
        return self.surname

    def setName(self, name):
        self.name = name

    def setSurname(self, surname):
        self.surname = surname

    def setAge(self, age):
        self.age = age

    def getAge(self):
        return self.age
    pass

和:

from Human import Human

class Student(Human):

    def __init__(self,name,surname,age,file):
        Human().__init__(self,name, surname, file)
        self.file = file

    def getFile(self):
        return self.file

    def setFile(self, file):
        self.file = file

    pass

当我实例化我时出现以下错误

from Student import Student
student1 = Student("Jhon", "Santana", "20", "111000")

错误:

Human().__init__(self, name, surname, age)
TypeError: __init__() takes exactly 4 arguments (1 given)

这个错误的原因是什么？谢谢...

Answer 1

Human().__init__(self,name, surname, age)

那不是你创建类实例的方式

你应该这样做:

Human.__init__(self,name, surname, age)

没有 () 。否则你会尝试在 Human()

中创建它的一个实例