Setting log file for a cron job with the log file name as date

Question

I am trying to set log file for a cron job and the name of the log file should be date.

The cron job is set like this.

55 09 * * * /home/program/my_folder/main.py &>> /home/program/my_folder/logs/file-`date"+\%Y"`-`date"+\%m"`-`date"+\%d"`.log

and in my main.py script i have added this code

 file_name = datetime.now().strftime('%Y-%m-%d.log')
 logging.basicConfig(filename='file-'+file_name,
                        level=logging.INFO,
                        format='%(asctime)s %(levelname)s %(message)s', )

But log filder name is not showing date name and logs are not coming. What could be the problem?