Delete files older than 3 months by parsing dates in filename

cleaner.py

#!/usr/bin/env python3
# Simple script to delete files older than 3 months.
# Usage: ./clean.py <path-of-dir-to-clean>


import os
import sys
import re
import datetime
from datetime import datetime as dt
from dateutil.relativedelta import relativedelta

monitor_dir = sys.argv[1]
today = datetime.datetime.now()
delete_policy_date = today + relativedelta(months=-3) # Getting the date of 3 months ago

print("Cleaning: " + monitor_dir)

# Using path walking from: https://stackoverflow.com/questions/18394147/recursive-sub-folder-search-and-return-files-in-a-list-python
result = [os.path.join(dp, f) for dp, dn, filenames in os.walk(
    monitor_dir) for f in filenames if os.path.splitext(f)[1] == '.csv']

# Parsing for date and deleting based on parsed date.
for name in result:
    date = re.search("([0-9]{4}\-[0-9]{2}\-[0-9]{2})", name).group()
    print(date)
    if dt.strptime(date, "%Y-%m-%d") < delete_policy_date:
        print("[DEBUG] Deleting file: ", name)
        os.remove(name)