auto save

diy4.py

-# username = "python"
-# userpassword = "123456"
+username = "python"
+userpassword = "123456"
 
-# while True:
-#     name = input("请输入你的用户名:")
-#     password = input("请输入你的密码:")
-#     if name == username and password == userpassword:
-#         print("登录成功")
-#         break
-#     if name != username:
-#         print("账号错误")
-#     if password != userpassword:
-#         print("密码错误")
-# print("欢迎来到贝尔编程")
+while True:
+    name = input("请输入你的用户名:")
+    password = input("请输入你的密码:")
+    if name == username and password == userpassword:
+        print("登录成功")
+        break
+    if name != username:
+        print("账号错误")
+        continue
+    if password != userpassword:
+        print("密码错误")
+print("欢迎来到贝尔编程")
 
-i = 0 
-while i <= 5:
-    i
\ No newline at end of file