checkForLargeSlackFiles.py

import requests
import json
import calendar
from datetime import datetime, timedelta

#lists all files above 10MB in your slack files repo
#based on https://www.shiftedup.com/2014/11/13/how-to-bulk-remove-files-from-slack

_token = ""
_domain = ""

if __name__ == '__main__':
    page = 1
    MB = 1000000
    while 1:
        files_list_url = 'https://slack.com/api/files.list'
        data = {"token": _token, "page": page}
        response = requests.post(files_list_url, data = data)
        if len(response.json()["files"]) == 0:
            break
        for f in response.json()["files"]:
            if f['size']>10*MB:
                print "%s (%s MB)" % (f['permalink'], f['size']/MB)
        page = page+1