问题与使用python的HTML中找到特定标签的父 [英] Issue with finding parent of a particular tag in html using python
问题描述
我试图获取使用下述code特定标签的父元素：
I am trying to fetch parent element of a particular tag using below mentioned code:
# -*- coding: cp1252 -*-
import csv
import urllib2
import sys
import time
from bs4 import BeautifulSoup
from itertools import islice
page1= urllib2.urlopen('http://www.sfr.fr/mobile/telephones?vue=000029&tgp=toutes-les-offres&typesmartphone=se-android&typesmartphone=se-apple&typesmartphone=se-bada&typesmartphone=se-rim-blackberry&typesmartphone=se-windows&p=0').read()
soup1 = BeautifulSoup(page1)
price_parent = soup1.findParents('div')
print price_parent
问题：输出，我运行这个code后获得返回空数组 [] ，如果我用 findParent ，而不是父母随后也返回无值。
Problem: Output which I am getting after running this code returns Null array [], if I use findParent instead of Parents then also it returns None value.
我实际的问题是类似这样的<一个href=\"http://stackoverflow.com/questions/10777250/beautifulsoup-findall-not-within-certain-tag\">BeautifulSoup - 不是的findAll中的某些标记
My actual problem is similar to this BeautifulSoup - findAll not within certain tag
要解决我的实际问题，我需要得到元素的父母，这是上面提到的我越来越无值。
To solve my actual problem I need to get parents of elements for which I am getting None value as mentioned above.
请帮我解决这个问题，原谅我的无知，我是新来的节目。
Please help me in solving this issue and pardon my ignorance as I am new to programming.
推荐答案
.findParents（）不会做你认为它。它发现的当前元素的父母的搜索匹配的。您正在试图找到一个页面元素，这已经是顶级元素的父母。
.findParents() does not do what you think it does. It finds the parents of the current element that match the search. You are trying to find the parents of a page element, which is already the top-level element.
如果你有这样的结构：
<html>
<body>
<div class="foo">
<span id="bar">Some text</span>
</div>
</body>
</html>
其中，汤是整个结构的BeautifulSoup变量，可以找到跨度与
where soup is a BeautifulSoup variable for the whole structure, you can find the span with:
spanelement = soup.find('span', id='bar')
，然后调用 .findParent（'格'）将返回一个结果，即＆LT; DIV CLASS =foo的＆GT; 元素。
and then calling .findParent('div') will return a result, namely the <div class="foo"> element.
所以，调用 .findParents（）顶级元素会的总是的返回一个空的结果，还有的在没有父母的。调用它的东西，确实有一个父元素来代替。
So, calling .findParents() on a top-level element will always return an empty result, there are no parents. Call it on something that does have a parent element instead.
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