刮除硒中的特定表

Question

我正在尝试刮擦在页面的div内找到的表。

到目前为止，基本上是我的尝试：

# NOTE: Download the chromedriver driver
# Then move exe file on C:\Python27\Scripts
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import time
import sys

driver = webdriver.Chrome()
driver.implicitly_wait(10)

URL_start = "http://www.google.us/trends/explore?"
date = '&date=today%203-m' # Last 90 days
location = "&geo=US"
symbol = sys.argv[1]
query = 'q='+symbol
URL = URL_start+query+date+location

driver.get(URL)

table = driver.find_element_by_xpath('//div[@class="line-chart"]/table/tbody')

print table.text

如果运行脚本，并使用“ stackoverflow”之类的参数，我应该可以抓取此网站： https : //www.google.us/trends/explore? date = today%203-m & geo = US & q = stackoverflow

显然我那里的xpath无法正常工作，程序没有打印任何内容，只是空白。

我基本上需要该网站上显示的图表值。 这些值（和日期）在表中，这是屏幕截图：

您能帮我找到表格的正确xpath以便在python上使用硒来检索那些值吗？

提前致谢！

Answer 1

您可以按如下方式使用Xpath：

//div[@class="line-chart"]/div/div[1]/div/div/table/tbody/tr

在这里，我将完善我的答案，并在您的代码中进行一些更改而不起作用。

# NOTE: Download the chromedriver driver
# Then move exe file on C:\Python27\Scripts
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import time
import sys
from lxml.html import fromstring,tostring

driver = webdriver.Chrome()
driver.implicitly_wait(20)
'''
URL_start = "http://www.google.us/trends/explore?"
date = '&date=today%203-m' # Last 90 days
location = "&geo=US"
symbol = sys.argv[1]
query = 'q='+symbol
URL = URL_start+query+date+location
'''
driver.get("https://www.google.us/trends/explore?date=today%203-m&geo=US&q=stackoverflow")

table_trs = driver.find_elements_by_xpath('//div[@class="line-chart"]/div/div[1]/div/div/table/tbody/tr')

for tr in table_trs:
    #print tr.get_attribute("innerHTML").encode("UTF-8")

    td = tr.find_elements_by_xpath(".//td")
    if len(td)==2:
        print td[0].get_attribute("innerHTML").encode("UTF-8") +"\t"+td[1].get_attribute("innerHTML").encode("UTF-8")