PermissionError: [Errno 13] Permission denied: 'KDDTrain+.csv'

This error message typically indicates that the user running the script does not have sufficient permissions to access or modify the file named "KDDTrain .csv".

To resolve this error, you can try the following steps:

1. Ensure that the file is not currently open or being used by another program or process. If it is, close the program or process and try again.

2. Check the file permissions to ensure that the user running the script has the necessary permissions to access and modify the file. You may need to change the file permissions using the chmod command or through your operating system's file properties dialog.

3. If you are running the script as a different user than the one who created the file, try running the script with elevated privileges (such as running as administrator on Windows or using sudo on Linux).

4. Check that the file path and name are correct and that there are no typos or errors in your script.

5. If none of the above steps work, you may need to copy the file to a different directory or rename it to avoid any conflicts with other files or programs.