save project

diy2.py

+i=3
+username = "我是单身狗"
+userpassword = "2013416"
+while True:
+    if i>0：
+        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("户名不对")
+            continue
+        if password != userpassword:
+            print("密码不对")
+    else:
+        print("你的账号已被锁定，请来我司结锁")
+
+
+
+print("欢迎来到豆丁!")
\ No newline at end of file