1. from lxml import etree 2. from lxml import html etree = html.etree

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

翻译这段代码 nb = requests.get(url, headers=head).text from lxml import etree sb = etree.HTML(nb) whh = sb.xpath('//tbody/tr[not(@class)]')

我理解你的意思是，你想要翻译这段代码：nb = requests.get(url, headers=head).text from lxml import etree sb = etree.HTML(nb) whh = sb.xpath('//tbody/tr[not(@class)]')，对吧？翻译如下：nb = requests.get（url，headers = head）.text 从lxml导入etree sb = etree.HTML（nb）whh = sb.xpath（'//tbody / tr [not（@class）]’）

import json import os.path import requests from time import sleep from lxml import etree import pprint

import json是Python中的一个内置模块，它提供了一种方便的方式来将Python对象转换为JSON格式，以及将JSON格式的数据转换为Python对象。在Python中使用import json导入该模块后，我们可以使用json.dumps()将Python对象转换为JSON格式，或者使用json.loads()将JSON格式的数据转换为Python对象。

除此之外，你还导入了其他模块，如os.path、requests、time、lxml和pprint。其中，os.path模块提供了一些常用的文件路径相关操作函数；requests模块是用于发送HTTP请求的模块；time模块提供了一些时间相关的函数；lxml是一个解析HTML和XML文档的Python库；pprint模块提供了一种更加美观的打印方式，用于输出Python对象。