实验七

class Account:
    """一个模拟银行账户的简单类"""

    def __init__(self, name, account_number, initial_amount = 10):
        """构造新账户"""
        self._name = name
        self._card_no = account_number
        self._balance = initial_amount

    def deposit(self, amount):
        """存款"""
        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._balance


def main():
    """创建Account类对象，测试类"""
    print('测试账户1：'.center(30, '*'))
    a1 = Account('Bob', '5002311', 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.withdraw(5000)
    a2.info()


if __name__ == '__main__':
    main()

 

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()

 

import math


def func(x, m, s):
    a = (-1/2)*((x-m)/s)**2
    y = math.exp(a)/(pow(2*math.pi, 0.5)*s)
    print(f'x = {x},f = {y:.8f}')


x = [1, 3, 5, 7, 9]
for i in x:
    func(i, 0, 2)