1. from lxml import etree 2. from lxml import html etree = html.etree
时间: 2023-11-26 19:05:55 浏览: 38
This code imports two modules from the lxml library: "etree" and "html". The first line imports the "etree" module, which is used for processing XML and HTML documents. The second line imports the "html" module, which provides a convenient way of parsing HTML documents.
The third line assigns the "etree" module to the variable "etree", which allows you to use the "etree" methods and functions directly from the "html" module. This is because the "html" module is built on top of the "etree" module, so it includes all of the functionality of the "etree" module.
Overall, this code sets up the environment for working with XML and HTML documents using the lxml library.
相关问题
import requests import re import csv from lxml import etree from tqdm import
import requests:是一个用于发送HTTP请求的Python库,可以用来获取网页内容。
import re:是一个用于处理正则表达式的Python库,可以用来匹配和处理文本。
import csv:是一个用于处理CSV文件的Python库,可以用来读取和写入CSV文件。
from lxml import etree:是一个用于解析XML和HTML文档的Python库,可以用来提取网页中的数据。
from tqdm import:是一个用于在循环中显示进度条的Python库,可以用来显示程序执行的进度。
综上所述,以上的import语句引入了几个常用的Python库,可以用于实现网页数据的获取、处理和展示。通过这些库的组合使用,可以实现从网页中获取数据,然后进行处理和分析,最后展示细节或整体的处理进度。
from lxml import etree xpath
from lxml import etree是导入lxml库中的etree模块。etree模块提供了一些方法用于解析和处理XML、HTML等文本。\[1\]在这个例子中,使用了xpath方法来解析在线网页,并提取出指定元素的属性值。\[2\]xpath是一种用于在XML或HTML文档中定位元素的语言,可以通过指定路径来选择元素。
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- *2* [Python解析库lxml与xpath用法总结](https://blog.csdn.net/pdcfighting/article/details/114735648)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down1,239^v3^insert_chatgpt"}} ] [.reference_item]
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