save project

aa.py

 username="python"
 userpassword="666666"
-War=input("请输入账号")
-Wer=input("请输入密码")
-if username==War and userpassword==Wer:
-    print("炸号成功")
\ No newline at end of file
+while True:
+    War=input("请输入账号")
+    Wer=input("请输入密码")
+    if username==War and userpassword==Wer:
+        print("登陆成功！")
+        break
+    print("用户名和密码输入错误！请重新输入")
+print("欢迎来到贝尔编程！")
+