Simple Python script to archive older files in a folder by tagging

gistfile1.py

import os
import glob
from datetime import date, timedelta
import re
from time import gmtime, strftime

folder = '<Insert folder name here>'
files = ['FileA.txt', 'FileB.txt']
archivePeriod = 5  # archive period in days

for file in files :
    try :
        # Remove file if older than archive period
        [fn, ff] = file.split('.')  # filename, fileformat
        for archivedFile in glob.glob(fn + "*" + ff):  # Find archived files
            matches = re.search(('(?<={}_)\d+(?=.txt)').format(fn), archivedFile)
            if  matches:
                if matches.group(0) < strftime('%Y%m%d' ,(date.today()-timedelta(days=archivePeriod)).timetuple()):
                    os.remove(os.path.join(dir, archivedFile))
        
        # Rename the file by appending last modified time stamp to the file name
        path = folder + file
        os.rename(path, path.replace('.txt', '_' + strftime('%Y%m%d', gmtime(os.path.getmtime(path))) + '.txt'))
                            
    except FileNotFoundError :
        print ('File ' + path + ' was not found')
    except FileExistsError:
        print ('File ' + path.replace('.txt', '_' + strftime('%Y%m%d', gmtime(os.path.getmtime(path))) + '.txt') + ' already exists')

thanks

Really helped , thanks