实验七

task1

class Account:
    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):
        if self._balance<amount:
            print('余额不足')
            return

        self._balance-=amount

    def info(self):
        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):
        return self._balance

def main():
    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()

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 task2

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()

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 task3

from math import *
m = 0
s = 2
def func(x):
    return 1/(sqrt(2*pi)*s)*(exp((-0.5)*((x-m)/s)**2))



print(f'x = 1,f = {func(1):.8f}')
print(f'x = 3,f = {func(3):.8f}')
print(f'x = 5,f = {func(5):.8f}')
print(f'x = 7,f = {func(7):.8f}')
print(f'x = 9,f = {func(9):.8f}')

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