python - 我在从其他类继承时遇到问题

Question

我刚刚创建了三个继承类，但出了点问题，但我尝试解决它但没有成功
我想知道是什么导致了这个错误以及我应该如何解决它
我应该继承其他类

1. 类(class):
   • 属性(property)
   • 房子
   • 出租
   • 房屋出租

为什么House Object不带参数

在 Book python 3 object oriented Programming

这有点令人惊讶，因为它既没有 init 也没有显示方法!因为两个父类都在这些方法中适本地调用了 super，所以我们只需要扩展这些类，类就会以正确的顺序运行。 prompt_init当然不是这样，因为它是一个不调用super的静态方法，所以我们显式实现这个。在我们编写其他三个组合之前，我们应该测试这个类以确保它的行为正常:

def get_valid_input(input_string, valid_options):
    input_string += "({})".format(", ".join(valid_options))
    response = input(input_string)
    while response.lower() not in valid_options:
        response = input(input_string)
    return response

class Property:
    def __init__(self, baths="", square_feet="",
                 beds="", **kwargs):
        super().__init__(**kwargs)
        self.num_baths = baths
        self.square_feet = square_feet
        self.num_beds = beds

    def display(self):
        print("PROPERTY DETAILS")
        print("================")
        print("square footage: {}".format(self.square_feet))
        print("bedrooms: {}".format(self.num_bedrooms))
        print("bathrooms: {}".format(self.num_baths))
        print()

    @staticmethod
    def prompt_init():
        return dict(sqare_feet=input("Enter The Square:"),
                    num_beds=input("Enter the Number of beds"),
                    num_baths=input("Enter the Number of baths"),)

class House(Property):
    valid_garage = ("attached", "detached", "none")
    valid_fenced = ("yes", "no")

    def __init__(self, garage="", fenced="", num_stories="", **kwargs):
        super().__init__(**kwargs)
        self.num_stories = num_stories
        self.garage = garage
        self.fenced = fenced

    def display(self):
        super().display()
        print("HOUSE DETAILS")
        print("# of stories: {}".format(self.num_stories))
        print("garage: {}".format(self.garage))
        print("fenced yard: {}".format(self.fenced))

    @staticmethod
    def prompt_init():
        parent_init = Property.prompt_init()
        garage = get_valid_input("Is the yard fenced? ", House.valid_garage)
        fenced = get_valid_input("Is there a garage? ", House.valid_fenced)
        num_stories = input("How many stories? ")

        parent_init.update({
            "garage": garage,
            "fenced": fenced,
            "num_stories": num_stories
        })
        return parent_init

class Rental:
    def __init__(self, furnished="", rent="", utilities="", **kwargs):
        super().__init__(**kwargs)
        self.furnished = furnished
        self.rent = rent
        self.utilities = utilities

    def display(self):
        super().display()
        print("RENTAL DETAILS")
        print("rent: {}".format(self.rent))
        print("estimated utilities: {}".format(self.utilities))
        print("furnished: {}".format(self.furnished))

    @staticmethod
    def prompt_init():
        return dict(
                rent=input("What is the monthly rent? "),
                utilities=input("What are the estimated utilities? "),
                furnished=get_valid_input("Is the property furnished? ",       ("yes", "no")),)

class HouseRental(House, Rental):

    @staticmethod
    def prompt_init():
        init = House.prompt_init()
        init.update(Rental.prompt_init())
        return init

info = HouseRental().prompt_init()
o = HouseRental(**info)
o.display()

Traceback (most recent call last):
  File "estate/placement.py", line 148, in <module>
    o = HouseRental(**info)
  File "estate/placement.py", line 68, in __init__
    super().__init__(**kwargs)
  File "estate/placement.py", line 13, in __init__
    super().__init__(**kwargs)
  File "estate/placement.py", line 117, in __init__
    super().__init__(**kwargs)
TypeError: object.__init__() takes no parameters

Answer 1

在Rental类中，你没有指定父类，但是调用了super()。

Rental 应该是 Property 的一个子类吗？

如果是这样，只需将该类更改为:

class Rental(Property):
def __init__(self, furnished="", rent="", utilities="", **kwargs):
    super().__init__(**kwargs)
    self.furnished = furnished
    self.rent = rent
    self.utilities = utilities

类似地，Property 类调用 super() 但没有从父类继承。我不相信你打算让 Property 成为一个子类，所以删除 super() 调用:

class Property:
def __init__(self, baths="", square_feet="",
             beds="", **kwargs):
    self.num_baths = baths
    self.square_feet = square_feet
    self.num_beds = beds

更一般地说:NewClass(ParentClass) 形式导致 NewClass 从 ParentClass 继承方法和属性。 Parent 类的 init 函数采用的任何参数现在都可以安全地传递给 NewClass。调用 super().init(**kwargs) 获取传递给 NewClass 的任何关键字参数，并将它们传递给 ParentClass。

如果没有 ParentClass，则 NewClass 继承自 Python 基类 Object，它不带任何参数。将 (**kwargs) 传递给 Object 会引发错误。

回溯的最后一行描述了这一点:

object.__init__() takes no parameters