list object has no attribute location python

我刚使用python写程序，然后总是报错list object has no attribute location，为什么？我应该怎么处理呢？

good=wzj.find_elements_by_class_name('gt_cut_fullbg_slice') # 这里返回的应该是一个列表，你可以插入print(type(good))看一下、
tem=good.location
一个list对象，怎么会有location方法？

能帖一下报错的行的代码吗

错误提示说了，你的列表有属性问题

这是代码，谢谢大神了。
import colorsys
import urllib,os,uuid,re,time
from PIL import Image
from selenium.webdriver.common.action_chains import ActionChains
from selenium import webdriver
from StringIO import StringIO
import colorsys
import urllib,os,uuid,re,time
from PIL import Image
from selenium.webdriver.common.action_chains import ActionChains
from selenium import webdriver
from StringIO import StringIO

wzj = webdriver.Firefox()#打开火狐浏览器
wzj.get('http://bj.gsxt.gov.cn/sydq/loginSydqAction!sydq.dhtml')
file=open('C:/Users/admin/Desktop/实验001.txt','r+')

def inputbyid(): #001_3
#输入查询关键词
#:text: Unicode, 要输入的文本
#:element_id: 输入框网页元素id
#keyword_qycx
text=u"百度"
element_id="keyword_qycx"
input_el =wzj.find_element_by_id(element_id)
input_el.clear()
input_el.send_keys(text)
time.sleep(3.5)

def clickbyid(): #001_4
#点击查询按钮
#:element_id: 查询按钮网页元素id
#popup-submit
element_id01="popup-submit"
wzj.find_element_by_id(element_id01).click()
time.sleep(3.5)

def openBrowser():#001_2
good=wzj.find_elements_by_class_name('gt_cut_fullbg_slice')
tem=good.location
tems=str(tem)
file.write(tems)
file.close()

inputbyid()
clickbyid()
openBrowser()

def crop_captcha_image(self, element_id="gt_box"):
"""截取验证码图片
:element_id: 验证码图片网页元素id
:returns: StringIO, 图片内容
"""
captcha_el = self.driver.find_element_by_class_name(element_id)
location = captcha_el.location
size = captcha_el.size
left = int(location['x'])
top = int(location['y'])
left = 1010
top = 535
# right = left + int(size['width'])
# bottom = top + int(size['height'])
right = left + 523
bottom = top + 235
print(left, top, right, bottom)
screenshot = self.driver.get_screenshot_as_png()#screenshot意思截取图片
screenshot = Image.open(StringIO.StringIO(screenshot))
captcha = screenshot.crop((left, top, right, bottom))
captcha.save("%s.png" % uuid.uuid4().get_hex())
return captcha

    这是我在网上找到的源码，然后上面就是这么写的，我应该怎么办？