save project

diy1.py

 usename"pythen"
 userpassword="we101010"
-name=input("请输入密码")
+while True:
+    name=input("请输入用户名:")
+    password = input("请输入密码:")
     if name==usernameandpassword==userpassword:
-    print("登录成功")
-    break
-       name  != username:
-    elif name !=username
+        print("登录成功")
+        break
+    elif name !=username:
         print("用户名不存在，请重新输入！")
-    else 
-   password != userpassword:
-      print("密码输入有误，请重新输入!")
+    else: 
+        print("密码输入有误，请重新输入!")
 print("欢迎来到贝尔编程")