"Unlikr" - modified from Brandon DeRosier's (@bdero) code at http://blog.cheesekeg.com/unlikr-unlike-everything-on-tumblr

unlikr.py

#!/usr/bin/env python
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.common.exceptions import NoSuchElementException
from selenium.webdriver.firefox.firefox_profile import FirefoxProfile
from time import sleep
from sys import argv
find_likes = lambda browser: browser.find_elements_by_css_selector('.post_control.like.liked')
def find_next_page(browser):
    try:
        return browser.find_element_by_id('next_page_link')
    except NoSuchElementException, e:
        return None
def login(browser, username, password):
    # Login to Tumblr
    browser.get('https://www.tumblr.com/login')
    e = browser.find_element_by_name('user[email]')
    e.send_keys(username)
    e = browser.find_element_by_name('user[password]')
    e.send_keys(password)
    # Original code forgot to submit the form
    e.submit()
def unlikr(username, password):
    ## get the Firefox profile object
    firefoxProfile = FirefoxProfile()
    ## Disable images
    firefoxProfile.set_preference('permissions.default.image', 2)
    browser = webdriver.Firefox(firefoxProfile)
    login(browser, username, password)
    # Go to likes page
    browser.get('https://www.tumblr.com/likes')
    # Destroy those likes!
    likes = find_likes(browser)
    while True:
        for button in likes:
            button.click()
            # You can technically just floor it, but you might look too much like a robot
            sleep(0.1)
        browser.get(browser.current_url) # Faster than refreshes
        likes = find_likes(browser)
        # Every once in a while you have to move to a new page instead of refreshing
        # Tumblr seems like kind of a fuck up in this regard
        next_page = find_next_page(browser)
        while next_page and not likes:
            next_page.click()
            likes = find_likes(browser)
            next_page = find_next_page(browser)
def usage():
    print 'usage: unlikr [username] [password]'
def die(code):
    usage()
    exit(code)
if __name__ == '__main__':
    if len(argv) != 3:
        die(1)
    username, password = argv[1:]
    unlikr(username, password)