python - 爬取非描述标签之间的文本

在某些情况下，我的文本介于模糊值和在整个文件中多次出现的属性之间（例如，重复使用'）。
最后，我想退出：“Prev Close:”和“565.07”，并将这些信息放入字符串或列表中（请给出建议）。
相关HTML源代码的一部分：

<div class="yui-u first yfi-start-content"><div class="yfi_quote_summary"><div id="yfi_quote_summary_data" class="rtq_table"><table id="table1"><tr><th scope="row" width="48%">Prev Close:</th><td class="yfnc_tabledata1">565.07</td></tr>

我的代码（Python3.4.1）：

soup = BeautifulSoup(data) # data contains the HTML source

FirstTable_tag = soup.find('div', attrs={'class': '"yui-u first yfi-start-content"'})
# Should the keys (attributes) in the "findNextSibling parameters below be filled in or left empty???
next_FirstTable_tag = FirstTable_tag.findNextSibling('div', attrs={'class': '"yfi_quote_summary"'})
next_next_FirstTable_tag = next_FirstTable_tag.findNextSibling('div', attrs={'id': '"yfi_quote_sumary_data"', 'class': '"rtq_table"'})
next_next_next_FirstTable_tag = next_next_FirstTable_tag.findNextSibling('table', attrs={'id': '"table1"'})
data = next_next_next_FirstTable_tag.get_text()

SelectSoup = BeautifulSoup(data)
print("SelectSoup:" + SelectSoup + "(should be:  Prev Close)")

错误

Traceback (most recent call last):
    next_FirstTable_tag = FirstTable_tag.findNextSibling
AttributeError: 'NoneType' object has no attribute 'findNextSibling'
<<< Process finished. (Exit code 1)

编辑
Here is the initial and full source as requested
尽管我已经开始使用雅虎的API，这显然是一种更好的方法，但我仍然试图在斯堪的纳维亚人的帮助下，让人们不再好奇地使用它_
我更新了上面的代码，但仍然有同样的错误。
编辑2
这篇文章将关注斯堪的纳维亚正在帮助开发的解决方案：

import sys
import urllib.request
url = "http://finance.yahoo.com/q?s=GOOG"
urlRunner = urllib.request.urlopen(url)
data = urlRunner.read()

from bs4 import BeautifulSoup
soup = BeautifulSoup(data)

import re
tables = soup.findAll("table", id = re.compile('^table'))
result = {}
for table in tables:
    for th, td in zip(table.findAll("th"), table.findAll("td")):
        result[th.text] = td.text
print(result)

结果：
{'52wk Range:': '502.80 - 604.83', 'Market Cap:': '381.04B', 'Next Earnings Date:': 'N/A', 'P/E (ttm):': '29.52', 'Avg Vol (3m):': '1,701,610', 'EPS (ttm):': '19.09', '1y Target Est:': 'N/A', 'Volume:': '561,384', 'Ask:': '563.98 x 100', 'Div & Yield:': 'N/A (N/A) ', 'Bid:': '563.56 x 100', 'Beta:': '1.144', 'Open:': '568.00', "Day's Range:": '562.53 - 569.77', 'Prev Close:': '566.37'}

最佳答案

这是基于我认为你想要的，但是没有一个合适的数据样本是不可能的。我猜不出它是如何构成的。在你的描述中，听起来数据是不规则的，这在你的样本中是看不到的。

from bs4 import BeautifulSoup
from itertools import izip

html = """<div class="yui-u first yfi-start-content">
    <div class="yfi_quote_summary">
        <div id="yfi_quote_summary_data" class="rtq_table">
            <table id="table1">
                <tr>
                    <th scope="row" width="48%">Target Point:</th>
                    <td class="yfnc_tabledata1">200.22</td>
                </tr>
                <tr>
                    <th scope="row" width="48%">Target Point:</th>
                    <td class="yfnc_tabledata1">200.22</td>
                </tr>
                <tr>
                    <th scope="row" width="48%">Target Point:</th>
                    <td class="yfnc_tabledata1">200.22</td>
                </tr>
            </table>
        </div>
    </div>
</div>"""

bs = BeautifulSoup(html)

result = {}

ths = bs.findAll("th")
tds = bs.findAll("td")
elements = izip(ths, tds)

result = []

for x, y in elements:
    result.append((x.text, y.text))

print result

编辑：
Yahoo API解决方案，请考虑改用：

import requests

URL = "https://query.yahooapis.com/v1/public/yql"

query = 'select * from yahoo.finance.quotes where symbol in ("GOOG")'

params = {
    "q": query,
    "format": "json",
    "env": "store://datatables.org/alltableswithkeys"
}

data = requests.get(URL, params=params).json()

print data['query']['results']['quote']['PreviousClose']
print data['query']['results']['quote']['Open']

这将打印：

565.07
561.78

以下是股票的可用数据：

AfterHoursChangeRealtime
AnnualizedGain
Ask
AskRealtime
AverageDailyVolume
Bid
BidRealtime
BookValue
Change
Change_PercentChange
ChangeFromFiftydayMovingAverage
ChangeFromTwoHundreddayMovingAverage
ChangeFromYearHigh
ChangeFromYearLow
ChangeinPercent
ChangePercentRealtime
ChangeRealtime
Commission
Currency
DaysHigh
DaysLow
DaysRange
DaysRangeRealtime
DaysValueChange
DaysValueChangeRealtime
DividendPayDate
DividendShare
DividendYield
EarningsShare
EBITDA
EPSEstimateCurrentYear
EPSEstimateNextQuarter
EPSEstimateNextYear
ErrorIndicationreturnedforsymbolchangedinvalid
ExDividendDate
FiftydayMovingAverage
HighLimit
HoldingsGain
HoldingsGainPercent
HoldingsGainPercentRealtime
HoldingsGainRealtime
HoldingsValue
HoldingsValueRealtime
LastTradeDate
LastTradePriceOnly
LastTradeRealtimeWithTime
LastTradeTime
LastTradeWithTime
LowLimit
MarketCapitalization
MarketCapRealtime
MoreInfo
Name
Notes
OneyrTargetPrice
Open
OrderBookRealtime
PEGRatio
PERatio
PERatioRealtime
PercebtChangeFromYearHigh
PercentChange
PercentChangeFromFiftydayMovingAverage
PercentChangeFromTwoHundreddayMovingAverage
PercentChangeFromYearLow
PreviousClose
PriceBook
PriceEPSEstimateCurrentYear
PriceEPSEstimateNextYear
PricePaid
PriceSales
SharesOwned
ShortRatio
StockExchange
symbol
Symbol
TickerTrend
TradeDate
TwoHundreddayMovingAverage
Volume
YearHigh
YearLow
YearRange

关于python - 爬取非描述标签之间的文本，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/25148648/