实验七 面向对象编程与内置模块

实验一

class Account:    #一个模拟银行账户的简单类

    def __init__(self, name, account_number,initial_amount = 10):
         self._name = name
         self._card_no = account_number
         self._balance = initial_amount

    def deposit(self, amount):
        self._balance += amount

    def withdraw(self, amount):      #取款
        if self._balance <= amount:
             print('余额不足')
             return

        self._balance -= amount

    def info(self):      #打印账户信息
         print('持卡人姓名：', self._name)
         print('持卡人账号：', self._card_no)
         print('持卡人账户余额：', self._balance)

    def get_balance(self):  #返回账户余额
         return self._balance1
    def main():    #创建Account类对象，测试类
     print('测试账户1：'.center(30, '*'))
     a1 = Account('Bob', '5006692', 20000)
     a1.deposit(5000)
     a1.withdraw(4000)
     a1.info()

     print()

     print('测试账户2:'.center(30, '*'))
     a2 = Account('Joe', '5006692', 20000)
     a2.withdraw(10000)
     a2.info()

    if __name__ == '__main__':
     main()

 实验二

from shape import Rect, Circle
 
 shape_lst = [Rect(5, 5, 10, 5), Circle(), Circle(1, 1, 10)]
 
 for i in shape_lst:
     i.info()
     print(f'面积：{i.area(): .2f}')
     print(f'周长：{i.perimeter() :.2f}')
     print()

 任务三

import math
 2 def func(x):
 3     f = ((math.e)**((-0.5)*(((x - m)/s)**2)))/(s*math.sqrt(2*(math.pi)))
 4     return f'{f:.8f}'
 5 
 6 m = 0
 7 s = 2
 8 x_lst = [1, 3, 5, 7, 9]
 9 for x in x_lst:
10     print(f'x = {x}, f = {func(x)}')