def applicants_skills(driver):
    """
    scrapes applicant skills by finding 'pill' tags in html
    returns list of skills. If skills not present on page, then
    returns empty list
    """
    try:
        raw_skills = driver.find_elements_by_css_selector("span.pill")
        skills     = [skill.text for skill in raw_skills] 
        return skills
    except Exception as e:
        print("error acquiring applicant skills")
        print(e)
    return []