save project

diy2.py

@@ -10,7 +10,20 @@ print("中")
 print("噢")
 print("噢")
 print("!")
 print("!")
 while True:
 while True:
-    if i>0
-    
 
 
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i=i-1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name!=username:
+            print("用户名不存在，请重新输入") 
+            continue
+        if password!=userpassword:
+            print("密码错误!请重新输入")
+    else:
+        print("您的账户已被锁定！")
+        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