auto save

diy1.py

-username=("小贝")
-userpassword=("1234")
-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("用户名输入错误，请重新输入")
-    if password!=userpassword:
-        print("密码输入错误，请重新输入")
-print("欢迎来到贝尔编程")
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+i=3
+username="123"
+userpassword="1234"
+while True:
+    if i>0:
+        name=input("输入用户名")
+        password=input("输入密码")
+        i-=1
+        if name==username and password==userpassword:
+            print("登陆成功")
+            break
+        if name!=username:
+            print("用户名错误")
+            continue
+        if password!=userpassword:
+            print("密码错误")
+    else:
+        print("三次机会已用完，账户已锁定")
+        exit()
+print("欢迎来到贝尔编程")            
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