Get counts by voting type.

tumblr_aggregates.py

import json
import requests
from collections import defaultdict

base_url = 'http://api.tumblr.com/v2/blog/inauguration2013.tumblr.com/posts/photo'
key_param = '?api_key=Cxp2JzyA03QxmQixf7Fee0oIYaFtBTTHKzRA0AveHlh094bwDH'
limit_param = '&limit=20'
limit = 20
new_limit = limit

r = requests.get(base_url + key_param)
total_count = int(json.loads(r.content)['response']['total_posts'])
pages_count = (total_count / limit)

pages_remainder = (total_count % limit)

if pages_remainder > 0:
    pages_count += 1

pages = range(0, pages_count)

categories = defaultdict(int)

for page in pages:

    start_number = new_limit - limit
    end_number = new_limit

    if end_number > total_count:
        end_number = total_count

    new_limit = new_limit + limit

    page_param = '&offset=%s' % start_number
    page_url = base_url + key_param + limit_param + page_param

    r = requests.get(page_url)

    posts = json.loads(r.content)

    for post in posts['response']['posts']:
        for tag in post['tags']:
            if 'vot' in tag:
                categories[tag] += 1

for tag, count in categories.items():
    percent = float(float(count) / float(total_count) * 100)
    print '%s: %s posts, %.2f percent' % (tag, count, percent)