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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标签:self,8f,amount,实验,func,._,print From: https://www.cnblogs.com/melancholy-z/p/17479218.html