创建文件a.txt,b.txt.c.txt用于存放应该持续保存的信息
a.txt ：用户密码输入错误3次就锁定
b.txt ：购物时的活动，每个用户只能参与一次
c:txt ：购物完后的发票在这里查看
购物车程序：
1 ready = 0 2 salary = input("how much is you salary:") 3 out = 0 4 #count = 0 5 if salary.isdigit(): 6 salary = int(salary) 7 else: 8 exit("input string not digital....exit") 9 list = [["精选猪肉3斤", 100], ["牛肉3斤", 200], ["鸡肉三斤", 50]] 10 shoppingcar = [] 11 while True: 12 print("----------------------------------------------------------------------------") 13 print("Welcome to xiaodai store") 14 print(" 33[31;1m目前正在做活动，购买商品满500的话就赠送一个精美的杯子哦!!!（超市内按h咨询）每人限1次 33[0m") 15 for i in enumerate(list): 16 info_l = i[0] 17 info_n = i[1][0] 18 info_m = i[1][1] 19 print(info_l, info_n, info_m) 20 user_c = input("please input your choose（h/help):") 21 if user_c.isdigit(): 22 user_c = int(user_c) 23 if user_c < len(list) and user_c >= 0: 24 user_c = int(user_c) 25 money = list[user_c][1] 26 shoppingcar_1 = list[user_c] 27 ready = ready + money 28 if salary >= money: 29 shoppingcar.append(shoppingcar_1) 30 print(shoppingcar_1, "add in then shoppingcar.....") 31 salary -= money 32 else: 33 print(" ----------------------") 34 print("|your money not enough:|", salary) 35 print(" ----------------------") 36 else: 37 print("没有这个商品编号") 38 elif user_c == "h" or user_c == help or user_c == "H": 39 print("q/quit quit store") 40 print("c/check check shopping car and salary") 41 print("0-2 choice of goods") 42 print("购买完商品后,输入[F]键来参加活动（满500赠送精美杯子)") 43 print("l/list 查看发票，购买完并退出超市后才能通过此方法看到发票") 44 elif user_c == "q" or user_c == "quit" or user_c == "Q": 45 print("your shoppingcar:", shoppingcar) 46 print("Be left over how much money:", salary) 47 time_1 = '%Y-%m-%d-%X' 48 time_2 = time.strftime(time_1) 49 with open('b.txt', 'a', encoding='utf-8') as f2: 50 f2.write("发票：%s用户 在 %s 购买了 %s 共消耗%s 元 " %(username,time_2,shoppingcar,ready)) 51 exit("quit....") 52 elif user_c == 'l'or user_c =='list': 53 with open('b.txt','r+',encoding='utf-8')as f3: 54 print(f3.read()) 55 elif user_c == "c" or user_c == "check" or user_c == "C": 56 print("Be left over how much money:", salary) 57 print(shoppingcar) 58 elif user_c == "f" or user_c == "F": 59 if ready >= 500 : 60 with open('c.txt','r+',encoding='utf-8') as f4: 61 aready=f4.read() 62 if username not in aready: 63 print("你的满额任务达成,获得精美杯子一个..................") 64 shoppingcar.append(['精美杯子', 0]) 65 if len(aready) != 0 : 66 f4.write(' '+username) 67 else: 68 f4.write(username) 69 else: 70 print('你已经领取过奖励了，你的购物车：%s'%shoppingcar) 71 continue 72 else: 73 print("你没有满足活动的需求") 74 else: 75 exit("input error")
所有代码:
import time,sys
def shopping():
"'购物车程序，进入时输入有多少钱，然后进行商品购物，消费满500后选择接受礼品，礼品每个用户只能接受一次，接受过的用户存放在c.txt文件中,购物完毕后打印发票，发票存储在b.txt文件中，"
ready = 0
salary = input("how much is you salary:")
out = 0
#count = 0
if salary.isdigit(): #判断salary是否为数字
salary = int(salary)
else:
exit("input string not digital....exit")
list = [["精选猪肉3斤", 100], ["牛肉3斤", 200], ["鸡肉三斤", 50]]
shoppingcar = []
while True:
print("----------------------------------------------------------------------------")
print("Welcome to xiaodai store")
print(" 33[31;1m目前正在做活动，购买商品满500的话就赠送一个精美的杯子哦!!!（超市内按h咨询）每人限1次 33[0m")
for i in enumerate(list): #enumerate可以在读取数据时添加一个编号在第一位，如[0,"精选猪肉3斤", 100]
info_l = i[0]
info_n = i[1][0]
info_m = i[1][1]
print(info_l, info_n, info_m)
user_c = input("please input your choose（h/help):")
if user_c.isdigit():
user_c = int(user_c)
if user_c < len(list) and user_c >= 0:
user_c = int(user_c)
money = list[user_c][1]
shoppingcar_1 = list[user_c]
ready = ready + money
if salary >= money:
shoppingcar.append(shoppingcar_1)
print(shoppingcar_1, "add in then shoppingcar.....")
salary -= money
else:
print(" ----------------------")
print("|your money not enough:|", salary)
print(" ----------------------")
else:
print("没有这个商品编号")
elif user_c == "h" or user_c == help or user_c == "H":
print("q/quit quit store")
print("c/check check shopping car and salary")
print("0-2 choice of goods")
print("购买完商品后,输入[F]键来参加活动（满500赠送精美杯子)")
print("l/list 查看发票，购买完并退出超市后才能通过此方法看到发票")
elif user_c == "q" or user_c == "quit" or user_c == "Q":
print("your shoppingcar:", shoppingcar)
print("Be left over how much money:", salary)
time_1 = '%Y-%m-%d-%X'
time_2 = time.strftime(time_1)
with open('b.txt', 'a', encoding='utf-8') as f2:
f2.write("发票：%s用户 在 %s 购买了 %s 共消耗%s 元
" %(username,time_2,shoppingcar,ready))
exit("quit....")
elif user_c == 'l'or user_c =='list':
with open('b.txt','r+',encoding='utf-8')as f3:
print(f3.read())
elif user_c == "c" or user_c == "check" or user_c == "C":
print("Be left over how much money:", salary)
print(shoppingcar)
elif user_c == "f" or user_c == "F":
if ready >= 500 :
with open('c.txt','r+',encoding='utf-8') as f4:
aready=f4.read()
if username not in aready:
print("你的满额任务达成,获得精美杯子一个..................")
shoppingcar.append(['精美杯子', 0])
if len(aready) != 0 : #len可以打印这个变量中是否有数据，他会显示这个文件的字数，添加这个判断是格式问题，如果文件中没有数据，责直接将数据写入进去，不加空格，如果存在数据，责在插入数据前先执行回车.
f4.write('
'+username) #在写入内容是在输入回车，不能用逗号来区分，用加号
else:
f4.write(username)
else:
print('你已经领取过奖励了，你的购物车：%s'%shoppingcar)
continue
else:
print("你没有满足活动的需求")
else:
exit("input error")
def auth():
'''慢慢的显示验证中'''
for i in range(1):
sys.stdout.write("验")
sys.stdout.flush()
time.sleep(0.3)
sys.stdout.write("证")
sys.stdout.flush()
time.sleep(0.3)
sys.stdout.write("中")
sys.stdout.flush()
time.sleep(0.3)
sys.stdout.write("请")
sys.stdout.flush()
time.sleep(0.3)
sys.stdout.write("稍")
sys.stdout.flush()
time.sleep(0.3)
sys.stdout.write("等")
sys.stdout.flush()
time.sleep(0.3)
user_list={
'xiaoming':{'xiaoming1'},
'xiaogang':{'xiaogang1'},
'xiaomei':{'xiaomei1'}
}
with open('a.txt','r+',encoding='utf-8')as f:
lock_list=f.read()
count=0
username = input(' please input your user name:')
for l in range(100):
passwd = input(' 33[31;3m please input your passwd: 33[1m')
for i in user_list:
auth()
print('
')
if username in lock_list :
print("用户已被锁定")
break
elif username not in user_list :
print('用户不存在')
username = input(' please input your user name:')
break
else:
a=user_list[username]
if passwd in a :
print('登录成功')
shopping()
elif count >= 3:
print("密码错误次数过多，用户%s被锁定，如需解锁，请联系管理员"%username)
f.write(username)
f.write('
')
exit('quit...')
else:
print('密码错误登录失败,请重试')
count = count + 1
break #为了确保如"密码错误登录失败,请重试"提示只提示一次，而不是按照for循环的提示多次，当执行完后就退出for循环，退出后又继续加载这个循环。