AttributeError：'ResultSet'对象没有属性'previousSibling'BS4(AttributeError: 'ResultSet' object has no attribute 'previousSibling' BS4)

 为一组特定的'td'标签和内部文本刮刮表。 为了过滤刮，我指的是一个特定的'img'标签，并尝试使用previousSibling调用来获得我想要的'td' 。 我已经尝试过previousSibling ， previous_sibling ， previous并继续收到错误： 
 
 
 
 'ResultSet'对象没有属性'previousSibling' 
 
 
 任何帮助，将不胜感激。 
 到目前为止，这是我的代码。 
 
from urllib2 import urlopen
import requests
from bs4 import BeautifulSoup
base_url = 'http://www.myfxbook.com/forex-economic-calendar'
response = urlopen(base_url)
html = response
soup = BeautifulSoup(html.read().decode('utf-8'), "lxml")
table = soup.find('table', attrs={'class': 'table center td30'})
is_row = table.findAll('img', attrs={'class': 'sprite sprite-common sprite-high-impact'}).previousSibling('td').text
print is_row 

Scraping a table for a specific set of 'td' tags and the text inside. To filter the scrape I'm targeting a specific 'img' tag and trying to use a previousSibling call to get my desired 'td'. I've tried previousSibling, previous_sibling, previous and keep getting the error:
 
 
 
'ResultSet' object has no attribute 'previousSibling'
 
 
Any help would be appreciated. 
 And this is my code so far.
 
from urllib2 import urlopen
import requests
from bs4 import BeautifulSoup
base_url = 'http://www.myfxbook.com/forex-economic-calendar'
response = urlopen(base_url)
html = response
soup = BeautifulSoup(html.read().decode('utf-8'), "lxml")
table = soup.find('table', attrs={'class': 'table center td30'})
is_row = table.findAll('img', attrs={'class': 'sprite sprite-common sprite-high-impact'}).previousSibling('td').text
print is_row 

原文：https://stackoverflow.com/questions/43330870