A tool for exporting Mastodon followers

export_mastodon_followers.py

###############################################################################
# A tool for exporting Mastodon followers
# Author: Zero
# Last update: 2022-02-09
###############################################################################
# Usage
#
# 1. Save this code as `export_mastodon_followers.py` in your computer.
#
# 2. Edit it, note that there are three places need to be changed:
#
#   a. <your_access_token_here> (line 32)
#           You can get your access token by: Settings -> Development ->
#       NEW APPLICATION -> fill in an application name -> SUBMIT -> click your
#       application name -> you will see your access token.
#
#   b. <mastodon.example> (line 33)
#           Replace it with the domain address of the instance you are using.
#
#   c. <:id> (line 33)
#           When you click one's avatar on Mastodon web UI, you can see the url
#       is in this format: `https://<mastodon.example>/web/accounts/<:id>`, the
#       last string of numbers is <:id>.
#
# 3. Execute this python file, and deal with the output as you like. For example,
#       in Linux, you can `python export_mastodon_followers.py > followers_list`.
###############################################################################

import requests
import re

headers = {'Authorization': 'Bearer <your_access_token_here>'}
url = 'https://<mastodon.example>/api/v1/accounts/<:id>/followers'

i = 1

while 1:
    fl = requests.get(url, headers = headers)
    fj = fl.json()
    for e in fj:
        acct = e["acct"]
        print(str(i) + '    ' + acct)
        i = i + 1
    if (not 'Link' in fl.headers) or (not 'rel="next"' in fl.headers['Link']):
        break
    else:
        next_url = re.match(r"\<(.*?)\>", fl.headers['Link']).groups()[0]
        url = next_url
        

Works good. URL for <:ID> is different on my instance than it says in the instructions. To get the needed ID, I had to click on my profile image, and it is all the numbers after avatars and before original, minus the slashes. instanceURL/accounts/avatars/100/100/100/100/100/100/original/7b0a791cfbb5b18e.gif
For example, the ID would be 100100100100100100