diff --git a/diy2.py b/diy2.py
new file mode 100644
index 0000000..2cc67ae
--- /dev/null
+++ b/diy2.py
@@ -0,0 +1,18 @@
+i=3
+username = "python"
+userpassword = "123456"
+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 username != name:
+        print("用户名错误!请重新输入")
+        i=i-1
+        continue
+    if userpassword != password:
+        print("用密码错误!请重新输入")
+    if i>0:
+        exit()   
+print("欢迎来到贝尔编程!")
\ No newline at end of file