Deleting and listing slack files, sorting by size

slack.py

#!/usr/bin/python

# Adapted from shauns
# https://gist.github.com/shauns/49f92d3979cced222bdbfbf3abb3a044

from slacker import Slacker
import itertools

# This grants you access to the Slack account in question.
# Get a token here: https://api.slack.com/custom-integrations/legacy-tokens
slack = Slacker('<API TOKEN>')

pages = slack.files.list(page=1).body['paging']['pages']

all_the_files = list(itertools.chain(*[slack.files.list(page=i).body['files'] for i in range(1,pages + 1)]))

# Remove files from array which are only links to external files
all_the_files = filter(lambda x: x['is_external'] == False, all_the_files)

# Sort array so largest files are at the top
biggest_first = sorted(all_the_files, key=lambda f: f['size'], reverse=True)

# Print results and show cumulative size of listed files
cumulative = 0
for i in range(0,24):
    file_info = "Size:\t" + str(biggest_first[i]['size'] / 1000000) + " MB\tName:\t" + biggest_first[i]['name']
    print(file_info)
    cumulative = cumulative + biggest_first[i]['size'] / 1000000

cumulative_size = "Cumulative size of 25 largest files:\t" + str(cumulative) + " MB"
print(cumulative_size)