save project

diy2.py

+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
+    elif name!=username:
+        print("没有!")
+    else:
+        print("滚!")
+print("欢迎来到红石电路(TNT)！")