auto save

2-4-diy3.py

+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    if name != username:
+        print("用户名不存在,请重新输入!")
+    if password != userpassword:
+        print("密码输入有误,请重新输入!")
+print("欢迎来到贝尔编程!")
\ No newline at end of file

2-4-diy6.py

+i = 3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i -=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("用户名错误,请重新输入!")
+            print("温馨提示:您还有"+str(i)+"次登录机会")
+            continue
+        if password != userpassword:
+            print("密码输入有误,请重新输入!")
+            print("温馨提示:您还有" + str(i) + "次登录机会")
+    else:
+        print("你的账户已被锁定，请一个小时以后再来")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file

store.py

-goods = {'可口可乐':3,'旺仔牛奶':4,'农夫山泉':1,'辣条':3,'巴西烤肉':2,'果冻':4,'乐事':5,'奥利奥':10,'巧克力':6}
+goods = {'可口可乐':3,'旺仔牛奶':4,'农夫山泉':2,'辣条':3,'巴西烤肉':2,'果冻':4,'乐事':5,'奥利奥':10,'巧克力':6}
 goods.pop("农夫山泉")
 print(goods)
 # 请将"农夫山泉"删掉，并打印出新的商品信息