diff --git a/diy2.py b/diy2.py
new file mode 100644
index 0000000..f8f70b5
--- /dev/null
+++ b/diy2.py
@@ -0,0 +1,16 @@
+username = "python"
+userpassword = "123456"
+a=5
+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 a==0:
+        print("错误次数过多,账号已锁定.")
+        exit()
+    if name != username or password != userpassword:
+        print("用户名或密码错误!请重新输入，还剩余",a,"次")
+        a-=1
+print("欢迎来到贝尔编程!")
\ No newline at end of file