Get whole history from a Slack channel

gethistory.py

#!/usr/bin/python3

import requests
import json

def send_request(req):
    return requests.post(req['url'], data = req['data'])

URL = {
    'scheme':    "https",
    'host':      "YOUR.slack.com",
    'resource':  "/api/conversations.history"
}

DATA = {
    'token':   "YOUR-SECRET-API-KEY",
    'channel': "CHANNELID"
}

# how to create api key
# https://github.com/zach-snell/slack-export/issues/33#issuecomment-647113733

req = {
    'url': "%s://%s%s" % (URL['scheme'], URL['host'], URL['resource']),
    'data': DATA,
}

outcnt = 0
while True:
    resp = send_request(req).json()
    outcnt += 1
    with open("out_%03d.json" % (outcnt), "w") as fp:
        print("Writing data to out_%03d.json with number of %d items..." % (outcnt, len(resp['messages'])))
        fp.write(json.dumps(resp, indent=4, sort_keys=True))
        fp.close()

    if 'response_metadata' in resp and 'next_cursor' in resp['response_metadata']:
        req['data']['cursor'] = resp['response_metadata']['next_cursor']
    else:
        print("No more next_cursor, exitting")
        break