auto save

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+i=3
 while True:
 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!")
-        print("欢迎来到贝尔编程!")
-        break
+    if i!=0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i=i-1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            print("欢迎来到贝尔编程!")
+            break
+        if name != username:
+            print("账号不存在")
+            continue
+        if password!=userpassword:
+            print("请输入正确的密码")
+            continue
     else:
     else:
-        print("用户名和密码错误!请重新输入")
+        print("输入次数超出，请携带身份证到公司办理")
+        exit()#停止程序
+    
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