lxml

一篇文章教会你利用Python网络爬虫抓取王者荣耀图片

由 让人想犯罪 __ 提交于 2021-02-02 03:58:40
【一、项目背景 】 王者荣耀作为当下最火的游戏之一，里面的人物信息更是惟妙惟肖，但受到官网的限制，想下载一张高清的图片很难。 （图片有版权）。 以彼岸桌面这个网站为例，爬取王者荣耀图片的信息。 【二、 项目目标 】 实现将获取到的图片批量下载。 【三、涉及的库和网站】 1、网址如下： http: //www .netbian.com/ s/wangzherongyao/index.htm/ 2、涉及的库： requests 、 lxml 【四、项目分析】 首先需要解决如何对下一页的网址进行请求的问题。可以 点击下一页的按钮，观察到网站的变化分别如下所示： http: //www .netbian.com/ s/wangzherongyao/index_2.htm http:/ /www.netbian.com/s /wangzherongyao/index _3.htm http: //www .netbian.com/ s /wangzherongyao/index_4.htm 观察到只有index_()变化，变化的部分用{}代替，再用for循环遍历这网址，实现多个网址请求。 http: / /www.netbian.com/s /wangzherongyao/index _ {}.htm 【五、项目实施】 1、我们定义一个class类继承object

Code using lxml and xpath works on single xml file, but fails when this is extended to a collection of similar xml

由 ε祈祈猫儿з 提交于 2021-01-29 15:07:51
问题 When parsing a single xml file to find a specific named node and it's text, I can get output as desired. However, I need to extend this code to a collection of xml files. When I do so, I get no output. Here is my code on a single xml file, which works as desired: from lxml import etree parsed_single = etree.parse('Downloads/one_file.xml') xp_eval =etree.XPathEvaluator(parsed_single) d = dict((item.text, item.tag) for item in xp_eval('//node_of_interest')) The above code outputs the following,

lxml/python reading xml with CDATA section

由 夙愿已清 提交于 2021-01-29 09:40:11
问题 In my xml I have a CDATA section. I want to keep the CDATA part, and then strip it. Can someone help with the following? Default does not work: $ from io import StringIO $ from lxml import etree $ xml = '<Subject> My Subject: 美海軍研究船勘查台海水文？ 船<![CDATA[é]]>€ </Subject>' $ tree = etree.parse(StringIO(xml)) $ tree.getroot().text ' My Subject: 美海軍研究船勘查台海水文？ 船é€ ' This post seems to suggest that a parser option strip_cdata=False may keep the cdata, but it has no effect: $ parser=etree.XMLParser

Is it possible to use bs4 soup object with lxml?

由 二次信任 提交于 2021-01-29 09:35:44
问题 I am trying to use both BS4 and lxml so instead of parsing html page twice, is there any way to use soup object in lxml or vice versa? self.soup = BeautifulSoup(open(path), "html.parser") i tried using this object with lxml like this doc = html.fromstring(self.soup) this is throwing error TypeError: expected string or bytes-like object is there anyway to get this type of usage ? 回答1: I don't think there is a way without going through a string object. from bs4 import BeautifulSoup import lxml

ImportError with python-pptx

由 左心房为你撑大大i 提交于 2021-01-29 06:07:04
问题 I faced with problem when I installed python-pptx with conda on cleaned environment: conda install -c conda-forge python-pptx. After install was successfully finished I tried to import pptx module and got following error: >>> import pptx Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Users\SazonovEO\AppData\Local\Continuum\anaconda3\envs\new\lib\site-p ackages\pptx\__init__.py", line 13, in <module> from pptx.api import Presentation # noqa File "C:\Users

AttributeError: 'NoneType' object has no attribute 'encode' with lxml-python

由 前提是你 提交于 2021-01-29 05:04:12
问题 I'm getting AttributeError: 'NoneType' object has no attribute 'encode' error when parsing out some XML patent inventor data. I'm trying to pull the first inventor plus their address infomation into a string as such below: inventor1 = first(doc.xpath('//applicants/applicant/addressbook/last-name/text()')) inventor2 = first(doc.xpath('//applicants/applicant/addressbook/first-name/text()')) inventor3 = first(doc.xpath('//applicants/applicant/addressbook/address/city/text()')) inventor4 = first

How to properly parse parent/child XML with Python

由 时光毁灭记忆、已成空白 提交于 2021-01-28 21:34:42
问题 I have a XML parsing issue that I have been working on for the last few days and I just can't figure it out. I've used both the ElementTree built-in to Python as well as the LXML libraries but get the same results. I would like to continue using ElementTree if I can, but if there are limitations to that library then LXML would do. Please see the following XML example. What I am trying to do is find a connection element and see what classes that element contains. I am expecting each connection

Parsing an html table with pd.read_html where cells contain full-tables themselves

由 梦想的初衷 提交于 2021-01-28 20:07:22
问题 I need to parse a table from html that has other tables nested within the larger table. As called below with pd.read_html , each of these nested tables are parsed and then "inserted"/"concatenated" as rows. I'd like these nested tables to each be parsed into their own pd.DataFrames and the inserted as objects as the value of the corresponding column. If this is not possible, having raw html for the nested table as a string in the corresponding position would be fine. Code as tested: import

lxml installed with conda: “ImportError: DLL load failed: The specified procedure could not be found”

由 给你一囗甜甜゛ 提交于 2021-01-28 18:56:00
问题 I am using anaconda on windows 10 with the lastest version of conda 4.5.12 . I am creating a very simple test env to try to install lxml with python 3.6.6 . Here my environment.yml file: channels: - defaults dependencies: - python=3.6.6 - lxml Then I create an env using conda: conda env create -f environment_test.yml -n test26 Here the list of packages after the installation: (test26) C:>conda list # packages in environment at C:\Program Files\Anaconda3\envs\test26: # # Name Version Build

How to extract information after a node in XML with Python?

由 …衆ロ難τιáo~ 提交于 2021-01-28 12:11:54
问题 I have the following XML structure (very large file, many more person entries) <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE population SYSTEM "http://www.matsim.org/files/dtd/population_v6.dtd"> <population desc="Switzerland Baseline"> <attributes> <attribute name="coordinateReferenceSystem" class="java.lang.String" >Atlantis</attribute> </attributes> <!-- ====================================================================== --> <person id="10"> <attributes> <attribute name="age" class=
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