如何在python中每天清除日志文件？

import os
import datetime

log_dir = '/path/to/log/directory/'
log_file = 'log.txt'

current_date = datetime.date.today()

delete_date = current_date - datetime.timedelta(days=1)

delete_file = os.path.join(log_dir, f'{delete_date.strftime("%Y-%m-%d")}_{log_file}')

if os.path.exists(delete_file):
    os.remove(delete_file)
    print(f'{delete_file} has been deleted.')
else:
    print(f'{delete_file} does not exist.')