Delete dropbox files

app.py

import re
import dropbox
import os
from dropbox.files import DeleteArg

ACCESS_TOKEN = os.getenv("DROPBOX_ACCESS_TOKEN", "")

dbx = dropbox.Dropbox(ACCESS_TOKEN)

date_regex = r"\d{2}-\d{2}-\d{4}"


def get_group_name(file_name):
    m = re.search(date_regex, file_name)
    return m.group(0)


dates = {}
for entry in dbx.files_list_folder("").entries:
    group = get_group_name(entry.name)
    if group not in dates:
        dates[group] = []
    dates[group].append(entry.path_lower)


def delete_files():
    for i in list(dates.keys())[:-3]:
        for j in dates[i]:
            dbx.files_delete_v2(j)