购物车（注册、登录、购物、购物车、结帐）

冷不防 2021-10-19 04:10 508阅读 0赞

shopping\_car\_dict=dict()  
money=\[0\]  
def input\_username\_pwd():  
username=input('username:')  
pwd=input('pwd:')  
return username,pwd  
def goods\_get():  
with open('goods.txt','r',encoding='utf8')as fr:  
fr1=fr.read()  
fr2=eval(fr1)  
return fr2  
fr2=goods\_get()

def register():  
print('欢迎来到注册功能：')  
username,pwd=input\_username\_pwd()  
with open('user\_info.txt','a',encoding='utf8')as fa:  
fa.write(f'\{username\}:\{pwd\}|')  
def login():  
print('欢迎来到登录功能：')  
username,pwd=input\_username\_pwd()  
username1=f'\{username\}:\{pwd\}'  
with open('user\_info.txt', 'r', encoding='utf8')as fr:  
fr2=fr.read()  
username2=fr2.split('|')  
if username1 in username2:  
print('登录成功')  
else:  
print('密码不对')

def shopping():  
print('欢迎来到购物天堂：')  
while True:  
for ind,goods in enumerate(fr2):  
print(f'商品编号\{ind\}',goods)  
choice=input('请选择商品编号，退出请按q:')  
if choice=='q':  
break  
choice=int(choice)  
goods=fr2\[choice\]  
print(f'购买商品\{goods\}成功,\\n')  
goods\_name=goods\[0\]  
if goods\_name in shopping\_car\_dict:  
shopping\_car\_dict\[goods\_name\]+=1  
else:  
shopping\_car\_dict\[goods\_name\]=1  
money\[0\]+=goods\[1\]  
print(f'你购买的商品是\{shopping\_car\_dict\},总价是\{money\[0\]\}')

def shopping\_car():  
print('欢迎来到购物车功能：')  
while True:  
print(f'你购买的商品是\{shopping\_car\_dict\},总价是\{money\[0\]\}')  
choice=input('请输入你要删除的商品编号，退出请按q:')  
if choice=='q':  
break  
shopping\_car\_dict\[choice\]-=1  
for goods in fr2:  
for choice in goods:  
money\[0\]-=goods\[1\]  
def pay():  
print('欢迎来到付款中心')  
print(f'你购买的商品是\{shopping\_car\_dict\},总价是\{money\[0\]\}')  
choice=input('确认付款请按Y或y,清空购物车请按N或n:')  
if choice=='Y'or choice=='y':  
print(f'你已支付\{money\[0\]\}元，购买的商品是\{shopping\_car\_dict\}')  
elif choice=='N'or choice=='n':  
shopping\_car\_dict.clear()  
money\[0\]=0  
print('购物车已清空')  
else:  
print('输入不合法')

func\_msg='''  
1：注册  
2：登录  
3：购物  
4：购物车  
5：消费  
'''  
func\_choice=\{  
'1':register,  
'2':login,  
'3':shopping,  
'4':shopping\_car,  
'5':pay,  
\}  
while True:  
print(func\_msg)  
lc=input('请输入你想要选择的功能，退出请按q:')  
if lc=='q':  
break  
else:  
func\_choicelc

转载于:https://www.cnblogs.com/jinhongquan/p/11354821.html