使用 BeautifulSoup 或 LXML.HTML 进行网页抓取 [英] WebScraping with BeautifulSoup or LXML.HTML

问题描述

我看过一些网络广播，在尝试执行此操作时需要帮助:我一直在使用 lxml.html.雅虎最近改变了网络结构.

I have seen some webcasts and need help in trying to do this: I have been using lxml.html. Yahoo recently changed the web structure.

目标页面；

http://finance.yahoo.com/quote/IBM/options?date=1469750400&straddle=true

在 Chrome 中使用检查器:我在

In Chrome using inspector: I see the data in

 //*[@id="main-0-Quote-Proxy"]/section/section/div[2]/section/section/table

然后一些更多的代码

如何将这些数据放入列表中.我想将其他股票从LLY"更改为Msft"?
我如何在日期之间切换......并获得所有月份.

How Do get this data out into a list. I want to change to other stock from "LLY" to "Msft"?
How do I switch between dates....And get all months.

推荐答案

基于@hoju 的答案:

Basing the Answer on @hoju:

import lxml.html
import calendar
from datetime import datetime

exDate  = "2014-11-22"
symbol  = "LLY"
dt      = datetime.strptime(exDate, '%Y-%m-%d')
ym      = calendar.timegm(dt.utctimetuple())

url     = 'http://finance.yahoo.com/q/op?s=%s&date=%s' % (symbol, ym,)
doc     = lxml.html.parse(url)
table   = doc.xpath('//table[@class="details-table quote-table Fz-m"]/tbody/tr')

rows    = []        
for tr in table:
     d = [td.text_content().strip().replace(',','') for td in tr.xpath('./td')]
     rows.append(d)

print rows 

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