diff --git a/diy2.py b/diy2.py
new file mode 100644
index 0000000..53ef261
--- /dev/null
+++ b/diy2.py
@@ -0,0 +1,21 @@
+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        i-=1
+        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("你输错用户名")
+            continue
+        if password!=userpassword:
+            print("你输错密码")
+            continue  
+    else:
+        print("账号已被封")        
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file