Get all of the active users by scrolling to the bottom

get_active_users.py

def get_active_users(browser, username, posts, logger):
    """Returns a list with users who liked the latest posts"""

    browser.get('https://www.instagram.com/' + username)
    sleep(2)

    total_posts = formatNumber(browser.find_element_by_xpath(
        "//span[contains(@class,'_t98z6')]//span").text)

    # if posts > total user posts, assume total posts
    if posts >= total_posts:
        # reaches all user posts
        posts = total_posts

    # click latest post
    browser.find_element_by_xpath(
        "(//div[contains(@class, '_si7dy')])[1]").click()

    active_users = []

    # posts argument is the number of posts to collect usernames
    for count in range(0, posts):
        try:
            browser.find_element_by_xpath(
                "//a[contains(@class, '_nzn1h')]").click()
            dialog = browser.find_element_by_xpath(
                "//div[text()='Likes']/following-sibling::div")
            scroll_it = True
            while scroll_it != False:
                scroll_it = browser.execute_script('''
                var div = arguments[0];
                if (div.offsetHeight + div.scrollTop < div.scrollHeight) {
                div.scrollTop = div.scrollHeight;
                return true;}
                else if (div.offsetHeight + div.scrollTop >= div.scrollHeight) {
                return false;}
                else {
                return null;}
                ''', dialog)
                if scroll_it is None:
                    print ("Too Many Requests!\n\n~sleeping a bit")
                    sleep(427)
                else:
                    sleep(4.27)
            tmp_list = browser.find_elements_by_xpath(
                "//a[contains(@class, '_2g7d5')]")
        except NoSuchElementException:
            try:
                tmp_list = browser.find_elements_by_xpath(
                    "//div[contains(@class, '_3gwk6')]/a")
            except NoSuchElementException:
                logger.error('There is some error searching active users')

        if len(tmp_list) is not 0:
            for user in tmp_list:
                active_users.append(user.text)

        sleep(1)
        # if not reached posts(parameter) value, continue
        if count+1 != posts:
            try:
                # click next button
                browser.find_element_by_xpath(
                    "//a[@class='_3a693 coreSpriteRightPaginationArrow']"
                    "[text()='Next']").click()
            except:
                logger.error('Unable to go to next profile post')

    # delete duplicated users
    active_users = list(set(active_users))

    return active_users