判断元素是否存在 find_elements

if br.find_elements_by_id("alLogin"):
                file_info('loginresultSuccess.txt', i + ' ' + 'pass' + '\n')
                print(i + " " + "pass")
                br.close()
            else:
                file_info('loginresultFail.txt', i + ' ' +  'Fail' + '\n')
                print(i + " " + "Fail")
                br.close()