save project

diy2.py

 username = "python"
 userpassword = "123456"
+i=3
 while True:
+    if i>0:
         name = input("请输入用户名:")
         password = input("请输入密码:")
+        i-=1
         if name == username and password == userpassword:
             print("登录成功!")
             break
@@ -14,6 +17,10 @@ while True:
         
         
             print("密码错误,请重新输入")
+    else: 
+        
+        print("用户名锁定,请重新输入")
+        exit()