Delete all members of a facebook group using Selenium

delete_facebook_group_memebers.py

import os
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from facepy import GraphAPI
import contextlib
import time
import threading

usr = 'FB_USER'
pwd = 'FB_PASS'
group = 'FB_GROUP'
access_token = 'FB_ACCESS_TOKEN'

class deleteMembers(threading.Thread):

    def __init__ (self, members):
        self._members = members
        threading.Thread.__init__(self)

    def run(self):
        print "=== STARTING DELETE ==="
        sleep_time = 1

        with contextlib.closing(webdriver.Firefox()) as driver:
            # or you can use Firefox()
            # or you can use Chrome(executable_path="/usr/bin/chromedriver")
            print "=== Opening facebook ==="
            driver.get("http://www.facebook.org")
            assert "Facebook" in driver.title

            print "=== Logging in ==="
            elem = driver.find_element_by_id("email")
            elem.send_keys(usr)
            elem = driver.find_element_by_id("pass")
            elem.send_keys(pwd)
            elem.send_keys(Keys.RETURN)
            time.sleep(sleep_time)

            for member in self._members['data']:
              if member['administrator']:
                continue
              driver.get("https://www.facebook.com/groups/" + group + "/members/?order=default&member_query=" + member['name'])
  
              # Get the user's name and open the menu
              elem = driver.find_elements_by_xpath("//a[contains(@class,'_42ft _4jy0 _55pi _2agf _p _4jy3 _517h _59pe')]")
              if len(elem) == 0:
                continue
              elem[0].click()
              time.sleep(sleep_time)

              # Select the delete user menu item
              menu_opts = driver.find_elements_by_xpath("//a[contains(@class, '_54nc')]")
              menu_opts[1].click()
              time.sleep(sleep_time)

              # Confirm the user deletion
              confirm = driver.find_elements_by_xpath("//button[contains(@class, '_42ft _42fu layerConfirm uiOverlayButton selected _42g- _42gy')]")
              confirm[0].click()
              time.sleep(sleep_time)

print "=== PREPARING DELETION GROUPS ==="
print "(this may take a bit)"
threads = []
graph = GraphAPI(access_token)
members = graph.get(group + '/members', limit=500)
offset = 0
while len(members['data']) > 0:
  thread = deleteMembers(members)
  threads.append(thread)
  offset += 500
  members = graph.get(group + '/members', limit=500, offset=offset)

print "=== STARTING THREADS ==="
max_threads = 10
running_threads = []
for x in range(0, max_threads):
  if len(threads) > 0:
    new_thread = threads.pop()
    running_threads.append(new_thread)
    new_thread.start()

while True:
  for i,t in enumerate(running_threads):
    if not t.isAlive():
      del running_threads[i]
      if len(threads) > 0:
        new_thread = threads.pop()
        running_threads.append(new_thread)
        new_thread.start()
  if len(running_threads) == 0:
    break

From some reports of usage, it appears as if, on average, each thread deletes 9.75 people per minute. The number of total threads is controlled by max_threads, and tends to work best when max_threads = # of cores. Since all the users to be deleted are downloaded at the beginning in chucks of 500, each thread should have a separate and unique set of people to remove, allowing for high levels of parallelizability.

do you know how can i unblock a member of my group? its very hard to scroll down and find it manually, because the search tool doesnt work :/

If you go to the members tab, in the sort options dropdown there should be a "blocked" option.