我尝试了几种方法来提取我想要的单词，但我无法做到。完成需要这样：
https://drive.google.com/open?id=0BzzXkoIWuMAHUjFuT2IteEtLVjQ
提取文本后，我可以将它们放入CSV文件
from urllib.request import urlopen as uReq
from urllib.request import Request
from bs4 import BeautifulSoup as soup
AccessCME=Request('http://www.cmegroup.com/trading/energy/natural-
gas/natural-gas_contract_specifications.html',headers={"User-
Agent":"Mozilla/5.0"})
CMEPage=uReq(AccessCME).read()
page_soup=soup(CMEPage,"html.parser")
possible_tds=page_soup.find_all('td',attrs={'class':'prodSpecAtribute'})
parent_td=[td for td in possible_tds if 'Trading' in td.text][0]
Target=parent_td.fetchNextSiblings('td')[1].text
print(Target)
New=Target.split(" ")
print(New)