run.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

import os
import json

from marvel.marvel import Marvel

public_key = os.environ.get('MARVEL_API_PUBLIC_KEY')
private_key = os.environ.get('MARVEL_API_PRIVATE_KEY')

marvel_api = Marvel(public_key, private_key)

characters = []

limit = 100
offset = 0
next = True

while next:
    characters_wrapper = marvel_api.get_characters(limit=str(limit), offset=str(offset))
    if characters_wrapper.code is 200:
        next = characters_wrapper.data.total is limit
        characters.append(characters_wrapper.data.results)

with open('data.txt') as out_file:
    json.dumps(characters, out_file)