auto save

login.py

-username="python"
-userpassword="123456"
-while True:
+i=3#定义剩余次数变量
+username="python"#正确账户
+userpassword="123456"#正确密码
+while True:#循环 死循环
+    if i>0:
         name=input("请输入账号：")
         name=input("请输入账号：")
         password=input("请输入密码：")
         password=input("请输入密码：")
+        i-=1#没输入一次账户密码登录次数减一
         if name==username and password==userpassword:
         if name==username and password==userpassword:
             print("登录成功！")
             print("登录成功！")
-        break
+            break#登录成功结束循环
         if name!=username:
         if name!=username:
             print("您输入的账号错误请重新输入！")
             print("您输入的账号错误请重新输入！")
-    if password!=userpassword:
-        print("您输入的密码错误请重新输入！")
+            print("您的登录次数剩余"+str(i)+"次")
+            # continue #跳出本次循环
+        elif password!=userpassword:
+            print("密码错误请重新输入！")
+            print("您的登录次数剩余"+str(i)+"次")
+    else:
+        print("您的账户已被锁定，请到我司进行解锁！")
+        exit()#结束程序
 print("欢迎来到贝尔编程！")
 print("欢迎来到贝尔编程！")
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