作业也

1、定义MySQL类

import random
import hashlib
class MySQL:

    def __init__(self,host,port):
        # self.id=id
        self.id=self.create_id()
        self.host=host
        self.port=port

    def create_id(self):
        front=self.host+self.port
        self.id=hashlib.md5(front)
        print(self.id.hexdigest())
        return self.id
hosts=input('输入host')
ports=input('输入port')
Mysql=MySQL(hosts,ports)


print(MySQL.create_id)
conn=MySQL('192.168.100.1',3306)
print(conn.create_id)

2、定义一个类：圆形，该类有半径，周长，面积等属性，将半径隐藏起来，将周长与面积开放

import math
class circle:
    def __init__(self, rad):
        self.__rad=rad
        # self.perimeter=perimeter
        # self.area=area
    @property
    def perimeter(self):
        return self.__rad * math.pi * 2

    @property
    def area(self):
        return math.pi * self.__rad**2

c=circle(10)
print(c.area)
print(c.perimeter)

3、使用abc模块定义一个phone抽象类 并编写一个具体的实现类

import abc

class phone(metaclass=abc.ABCMeta):
    @abc.abstractmethod
    def name(self):
        pass
    @abc.abstractmethod
    def prize(self):
        pass
    @abc.abstractmethod
    def memory(self):
        pass

class oneplus(phone):
    def name(self):
        print('One Plus 7 Pro')
    def prize(self):
        print(4299)
    def memory(self):
        print('256GB')

class oppo(phone):
    def name(self):
        print('Oppo Reno 2')
    def prize(self):
        print(2999)
    def memory(self):
        print('128GB')