auto save

diy2.py

-username = "python"
-userpassword = "123456"
+username = "python"#注册账号
+userpassword = "123456"#注册密码
+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!")
-        break
-    print("用户名和密码错误!请重新输入")
+    if i>0:
+        name = input("请输入用户名:")#账号
+        password = input("请输入密码:")
+        i-=1 #密码
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if  username!=name:
+            print("账号错误请重新输入")
+            print("还剩下"+str(i)+"次")
+            continue
+        if userpassword!=password:
+            print("密码错误请重新输入")
+            print("还剩下"+str(i)+"次")
+    else：
+        print("账号已被锁定")
+        exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file