Community
Learn
Tools Library
AI Tools
Leisure
search
English
Table of Contents
1.xpath
1.1 Use xpath 
pip install jsonpath
Copy after login
" >
pip install jsonpath
Copy after login
Home Backend Development Python Tutorial How to use Python for xpath, JsonPath, and bs4?

How to use Python for xpath, JsonPath, and bs4?

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
May 09, 2023 pm 09:04 PM
python jsonpath xpath

1.xpath

1.1 Use xpath

  • Google installs the xpath plug-in in advance, press ctrl shift x and a small black box will appear

  • Install lxml librarypip install lxml ‐i https://pypi.douban.com/simple

  • Import lxml.etreefrom lxml import etree

  • etree.parse() parses local files html_tree = etree.parse('XX.html')

  • etree.HTML() Server response filehtml_tree = etree.HTML(response.read().decode('utf‐8')

  • .html_tree.xpath(xpath path)

##1.2 Basic xpath syntax

1. Path query

  • Find all descendant nodes , regardless of hierarchical relationship

  • Find direct child nodes

2. Predicate query

//div[@id] 
//div[@id="maincontent"]
Copy after login

3.Attribute query

//@class
Copy after login

4. Fuzzy query

//div[contains(@id, "he")] 
//div[starts‐with(@id, "he")]
Copy after login

5. Content query

//div/h2/text()
Copy after login

6. Logical operation

//div[@id="head" and @class="s_down"] 
//title | //price
Copy after login

1.3 Example

xpath .html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8"/>
    <title>Title</title>
</head>
<body>
    <ul>
        <li id="l1" class="class1">北京</li>
        <li id="l2" class="class2">上海</li>
        <li id="d1">广州</li>
        <li>深圳</li>
    </ul>
</body>
</html>
Copy after login
from lxml import etree

# xpath解析
# 本地文件：                                          etree.parse
# 服务器相应的数据    response.read().decode(&#39;utf-8&#39;)  etree.HTML()


tree = etree.parse(&#39;xpath.html&#39;)

# 查找url下边的li
li_list = tree.xpath(&#39;//body/ul/li&#39;)
print(len(li_list))  # 4

# 获取标签中的内容
li_list = tree.xpath(&#39;//body/ul/li/text()&#39;)
print(li_list)  # [&#39;北京&#39;, &#39;上海&#39;, &#39;广州&#39;, &#39;深圳&#39;]

# 获取带id属性的li
li_list = tree.xpath(&#39;//ul/li[@id]&#39;)
print(len(li_list))  # 3

# 获取id为l1的标签内容
li_list = tree.xpath(&#39;//ul/li[@id="l1"]/text()&#39;)
print(li_list)  # [&#39;北京&#39;]

# 获取id为l1的class属性值
c1 = tree.xpath(&#39;//ul/li[@id="l1"]/@class&#39;)
print(c1)  # [&#39;class1&#39;]

# 获取id中包含l的标签
li_list = tree.xpath(&#39;//ul/li[contains(@id, "l")]/text()&#39;)
print(li_list)  # [&#39;北京&#39;, &#39;上海&#39;]
# 获取id以d开头的标签
li_list = tree.xpath(&#39;//ul/li[starts-with(@id,"d")]/text()&#39;)
print(li_list)  # [&#39;广州&#39;]
# 获取id为l2并且class为class2的标签
li_list = tree.xpath(&#39;//ul/li[@id="l2" and @class="class2"]/text()&#39;)
print(li_list)  # [&#39;上海&#39;]
# 获取id为l2或id为d1的标签
li_list = tree.xpath(&#39;//ul/li[@id="l2"]/text() | //ul/li[@id="d1"]/text()&#39;)
print(li_list)  # [&#39;上海&#39;, &#39;广州&#39;]
Copy after login

1.4

Crawling the value of Baidu search button
import urllib.request
from lxml import etree
url = &#39;http://www.baidu.com&#39;
headers = {
    &#39;User-Agent&#39;: &#39;Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36&#39;
}
request = urllib.request.Request(url=url, headers=headers)
response = urllib.request.urlopen(request)
content = response.read().decode(&#39;utf-8&#39;)
tree = etree.HTML(content)
value = tree.xpath(&#39;//input[@id="su"]/@value&#39;)
print(value)
Copy after login

How to use Python for xpath, JsonPath, and bs4?

1.5 Crawling pictures of webmaster materials 

# 需求 下载的前十页的图片
# https://sc.chinaz.com/tupian/qinglvtupian.html   1
# https://sc.chinaz.com/tupian/qinglvtupian_page.html
import urllib.request
from lxml import etree
def create_request(page):
    if (page == 1):
        url = &#39;https://sc.chinaz.com/tupian/qinglvtupian.html&#39;
    else:
        url = &#39;https://sc.chinaz.com/tupian/qinglvtupian_&#39; + str(page) + &#39;.html&#39;
    headers = {
        &#39;User-Agent&#39;: &#39;Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36&#39;,
    }
    request = urllib.request.Request(url=url, headers=headers)
    return request
def get_content(request):
    response = urllib.request.urlopen(request)
    content = response.read().decode(&#39;utf-8&#39;)
    return content
def down_load(content):
    #     下载图片
    # urllib.request.urlretrieve(&#39;图片地址&#39;,&#39;文件的名字&#39;)
    tree = etree.HTML(content)
    name_list = tree.xpath(&#39;//div[@id="container"]//a/img/@alt&#39;)
    # 一般设计图片的网站都会进行懒加载
    src_list = tree.xpath(&#39;//div[@id="container"]//a/img/@src2&#39;)
    print(src_list)
    for i in range(len(name_list)):
        name = name_list[i]
        src = src_list[i]
        url = &#39;https:&#39; + src
        urllib.request.urlretrieve(url=url, filename=&#39;./loveImg/&#39; + name + &#39;.jpg&#39;)
if __name__ == &#39;__main__&#39;:
    start_page = int(input(&#39;请输入起始页码&#39;))
    end_page = int(input(&#39;请输入结束页码&#39;))

    for page in range(start_page, end_page + 1):
        # (1) 请求对象的定制
        request = create_request(page)
        # （2）获取网页的源码
        content = get_content(request)
        # （3）下载
        down_load(content)
Copy after login

2. JsonPath

2.1 pip installation

pip install jsonpath
Copy after login

2.2 Use of jsonpath

obj = json.load(open(&#39;json文件&#39;, &#39;r&#39;, encoding=&#39;utf‐8&#39;)) 
ret = jsonpath.jsonpath(obj, &#39;jsonpath语法&#39;)
Copy after login

Comparison of JSONPath syntax elements and corresponding XPath elements:

How to use Python for xpath, JsonPath, and bs4?

Example:

jsonpath.json

{ "store": {
    "book": [
      { "category": "修真",
        "author": "六道",
        "title": "坏蛋是怎样练成的",
        "price": 8.95
      },
      { "category": "修真",
        "author": "天蚕土豆",
        "title": "斗破苍穹",
        "price": 12.99
      },
      { "category": "修真",
        "author": "唐家三少",
        "title": "斗罗大陆",
        "isbn": "0-553-21311-3",
        "price": 8.99
      },
      { "category": "修真",
        "author": "南派三叔",
        "title": "星辰变",
        "isbn": "0-395-19395-8",
        "price": 22.99
      }
    ],
    "bicycle": {
      "author": "老马",
      "color": "黑色",
      "price": 19.95
    }
  }
}
Copy after login
import json
import jsonpath

obj = json.load(open(&#39;jsonpath.json&#39;, &#39;r&#39;, encoding=&#39;utf-8&#39;))

# 书店所有书的作者
author_list = jsonpath.jsonpath(obj, &#39;$.store.book[*].author&#39;)
print(author_list)  # [&#39;六道&#39;, &#39;天蚕土豆&#39;, &#39;唐家三少&#39;, &#39;南派三叔&#39;]

# 所有的作者
author_list = jsonpath.jsonpath(obj, &#39;$..author&#39;)
print(author_list)  # [&#39;六道&#39;, &#39;天蚕土豆&#39;, &#39;唐家三少&#39;, &#39;南派三叔&#39;, &#39;老马&#39;]

# store下面的所有的元素
tag_list = jsonpath.jsonpath(obj, &#39;$.store.*&#39;)
print(
    tag_list)  # [[{&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;六道&#39;, &#39;title&#39;: &#39;坏蛋是怎样练成的&#39;, &#39;price&#39;: 8.95}, {&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;天蚕土豆&#39;, &#39;title&#39;: &#39;斗破苍穹&#39;, &#39;price&#39;: 12.99}, {&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;唐家三少&#39;, &#39;title&#39;: &#39;斗罗大陆&#39;, &#39;isbn&#39;: &#39;0-553-21311-3&#39;, &#39;price&#39;: 8.99}, {&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;南派三叔&#39;, &#39;title&#39;: &#39;星辰变&#39;, &#39;isbn&#39;: &#39;0-395-19395-8&#39;, &#39;price&#39;: 22.99}], {&#39;author&#39;: &#39;老马&#39;, &#39;color&#39;: &#39;黑色&#39;, &#39;price&#39;: 19.95}]

# store里面所有东西的price
price_list = jsonpath.jsonpath(obj, &#39;$.store..price&#39;)
print(price_list)  # [8.95, 12.99, 8.99, 22.99, 19.95]

# 第三个书
book = jsonpath.jsonpath(obj, &#39;$..book[2]&#39;)
print(book)  # [{&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;唐家三少&#39;, &#39;title&#39;: &#39;斗罗大陆&#39;, &#39;isbn&#39;: &#39;0-553-21311-3&#39;, &#39;price&#39;: 8.99}]

# 最后一本书
book = jsonpath.jsonpath(obj, &#39;$..book[(@.length-1)]&#39;)
print(book)  # [{&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;南派三叔&#39;, &#39;title&#39;: &#39;星辰变&#39;, &#39;isbn&#39;: &#39;0-395-19395-8&#39;, &#39;price&#39;: 22.99}]
# 	前面的两本书
book_list = jsonpath.jsonpath(obj, &#39;$..book[0,1]&#39;)
# book_list = jsonpath.jsonpath(obj,&#39;$..book[:2]&#39;)
print(
    book_list)  # [{&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;六道&#39;, &#39;title&#39;: &#39;坏蛋是怎样练成的&#39;, &#39;price&#39;: 8.95}, {&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;天蚕土豆&#39;, &#39;title&#39;: &#39;斗破苍穹&#39;, &#39;price&#39;: 12.99}]

# 条件过滤需要在（）的前面添加一个？
# 	 过滤出所有的包含isbn的书。
book_list = jsonpath.jsonpath(obj, &#39;$..book[?(@.isbn)]&#39;)
print(
    book_list)  # [{&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;唐家三少&#39;, &#39;title&#39;: &#39;斗罗大陆&#39;, &#39;isbn&#39;: &#39;0-553-21311-3&#39;, &#39;price&#39;: 8.99}, {&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;南派三叔&#39;, &#39;title&#39;: &#39;星辰变&#39;, &#39;isbn&#39;: &#39;0-395-19395-8&#39;, &#39;price&#39;: 22.99}]
# 哪本书超过了10块钱
book_list = jsonpath.jsonpath(obj, &#39;$..book[?(@.price>10)]&#39;)
print(
    book_list)  # [{&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;天蚕土豆&#39;, &#39;title&#39;: &#39;斗破苍穹&#39;, &#39;price&#39;: 12.99}, {&#39;category&#39;: &#39;修真&#39;, &#39;author&#39;: &#39;南派三叔&#39;, &#39;title&#39;: &#39;星辰变&#39;, &#39;isbn&#39;: &#39;0-395-19395-8&#39;, &#39;price&#39;: 22.99}]
Copy after login

3. BeautifulSoup

3.1 Basic introduction

1.Installation

pip install bs4

2.Import

from bs4 import BeautifulSoup

3. Create object

  • The file generated by the server response object soup = BeautifulSoup(response.read().decode() , 'lxml')

  • Local file generation object soup = BeautifulSoup(open('1.html'), 'lxml')

Note: The default encoding format for opening files is gbk, so you need to specify the opening encoding format utf-8

3.2 Installation and creation

1.根据标签名查找节点 
	soup.a 【注】只能找到第一个a 
		soup.a.name 
		soup.a.attrs 
2.函数 
	(1).find(返回一个对象) 
		find(&#39;a&#39;)：只找到第一个a标签
		find(&#39;a&#39;, title=&#39;名字&#39;) 
		find(&#39;a&#39;, class_=&#39;名字&#39;) 
	(2).find_all(返回一个列表) 
		find_all(&#39;a&#39;) 查找到所有的a 
		find_all([&#39;a&#39;, &#39;span&#39;]) 返回所有的a和span 
		find_all(&#39;a&#39;, limit=2) 只找前两个a 
	(3).select(根据选择器得到节点对象)【推荐】 
		1.element 
			eg:p 
		2..class 
			eg:.firstname 
		3.#id
			eg:#firstname 
		4.属性选择器 
			[attribute] 
				eg:li = soup.select(&#39;li[class]&#39;) 
			[attribute=value] 
				eg:li = soup.select(&#39;li[class="hengheng1"]&#39;) 
		5.层级选择器 
			element element 
				div p 
			element>element 
				div>p 
			element,element 
				div,p 
					eg:soup = soup.select(&#39;a,span&#39;)
Copy after login
Copy after login

3.3 Node positioning 

1.根据标签名查找节点 
	soup.a 【注】只能找到第一个a 
		soup.a.name 
		soup.a.attrs 
2.函数 
	(1).find(返回一个对象) 
		find(&#39;a&#39;)：只找到第一个a标签
		find(&#39;a&#39;, title=&#39;名字&#39;) 
		find(&#39;a&#39;, class_=&#39;名字&#39;) 
	(2).find_all(返回一个列表) 
		find_all(&#39;a&#39;) 查找到所有的a 
		find_all([&#39;a&#39;, &#39;span&#39;]) 返回所有的a和span 
		find_all(&#39;a&#39;, limit=2) 只找前两个a 
	(3).select(根据选择器得到节点对象)【推荐】 
		1.element 
			eg:p 
		2..class 
			eg:.firstname 
		3.#id
			eg:#firstname 
		4.属性选择器 
			[attribute] 
				eg:li = soup.select(&#39;li[class]&#39;) 
			[attribute=value] 
				eg:li = soup.select(&#39;li[class="hengheng1"]&#39;) 
		5.层级选择器 
			element element 
				div p 
			element>element 
				div>p 
			element,element 
				div,p 
					eg:soup = soup.select(&#39;a,span&#39;)
Copy after login
Copy after login

3.5 Node information 

(1).获取节点内容：适用于标签中嵌套标签的结构 
	obj.string 
	obj.get_text()【推荐】 
(2).节点的属性 
	tag.name 获取标签名 
		eg:tag = find(&#39;li) 
			print(tag.name) 
	tag.attrs将属性值作为一个字典返回 
(3).获取节点属性 
	obj.attrs.get(&#39;title&#39;)【常用】 
	obj.get(&#39;title&#39;) 
	obj[&#39;title&#39;]
Copy after login
Copy after login
(1).获取节点内容：适用于标签中嵌套标签的结构 
	obj.string 
	obj.get_text()【推荐】 
(2).节点的属性 
	tag.name 获取标签名 
		eg:tag = find(&#39;li) 
			print(tag.name) 
	tag.attrs将属性值作为一个字典返回 
(3).获取节点属性 
	obj.attrs.get(&#39;title&#39;)【常用】 
	obj.get(&#39;title&#39;) 
	obj[&#39;title&#39;]
Copy after login
Copy after login

3.6 Usage example

bs4.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

    <div>
        <ul>
            <li id="l1">张三</li>
            <li id="l2">李四</li>
            <li>王五</li>
            <a href="" id=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" " class="a1">google</a>
            <span>嘿嘿嘿</span>
        </ul>
    </div>


    <a href="" title=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" a2">百度</a>

    <div id="d1">
        <span>
            哈哈哈
        </span>
    </div>

    <p id="p1" class="p1">呵呵呵</p>
</body>
</html>
Copy after login
from bs4 import BeautifulSoup
# 通过解析本地文件 来将bs4的基础语法进行讲解
# 默认打开的文件的编码格式是gbk 所以在打开文件的时候需要指定编码
soup = BeautifulSoup(open(&#39;bs4.html&#39;, encoding=&#39;utf-8&#39;), &#39;lxml&#39;)
# 根据标签名查找节点
# 找到的是第一个符合条件的数据
print(soup.a)  # <a class="a1" href="" id=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ">google</a>
# 获取标签的属性和属性值
print(soup.a.attrs)  # {&#39;href&#39;: &#39;&#39;, &#39;id&#39;: &#39;&#39;, &#39;class&#39;: [&#39;a1&#39;]}
# bs4的一些函数
# （1）find
# 返回的是第一个符合条件的数据
print(soup.find(&#39;a&#39;))  # <a class="a1" href="" id=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ">google</a>
# 根据title的值来找到对应的标签对象
print(soup.find(&#39;a&#39;, title="a2"))  # <a href="" title=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" a2">百度</a>

# 根据class的值来找到对应的标签对象  注意的是class需要添加下划线
print(soup.find(&#39;a&#39;, class_="a1"))  # <a class="a1" href="" id=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ">google</a>

# （2）find_all  返回的是一个列表 并且返回了所有的a标签
print(soup.find_all(&#39;a&#39;))  # [<a class="a1" href="" id=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ">google</a>, <a href="" title=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" a2">百度</a>]

# 如果想获取的是多个标签的数据 那么需要在find_all的参数中添加的是列表的数据
print(soup.find_all([&#39;a&#39;,&#39;span&#39;]))  # [<a class="a1" href="" id=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ">google</a>, <span>嘿嘿嘿</span>, <a href="" title=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" a2">百</a><spa哈</span>]

# limit的作用是查找前几个数据
print(soup.find_all(&#39;li&#39;, limit=2))  # [<li id="l1">张三</li>, <li id="l2">李四</li>]

# （3）select（推荐）
# select方法返回的是一个列表  并且会返回多个数据
print(soup.select(&#39;a&#39;))  # [<a class="a1" href="" id=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ">google</a>, <a href="" title=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" a2">百度</a>]

# 可以通过.代表class  我们把这种操作叫做类选择器
print(soup.select(&#39;.a1&#39;))  # [<a class="a1" href="" id=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ">google</a>]

print(soup.select(&#39;#l1&#39;))  # [<li id="l1">张三</li>]

# 属性选择器---通过属性来寻找对应的标签
# 查找到li标签中有id的标签
print(soup.select(&#39;li[id]&#39;))  # [<li id="l1">张三</li>, <li id="l2">李四</li>]

# 查找到li标签中id为l2的标签
print(soup.select(&#39;li[id="l2"]&#39;))  # [<li id="l2">李四</li>]

# 层级选择器
#  后代选择器
# 找到的是div下面的li
print(soup.select(&#39;div li&#39;))  # [<li id="l1">张三</li>, <li id="l2">李四</li>, <li>王五</li>]

# 子代选择器
#  某标签的第一级子标签
# 注意：很多的计算机编程语言中 如果不加空格不会输出内容  但是在bs4中 不会报错 会显示内容
print(soup.select(&#39;div > ul > li&#39;))  # [<li id="l1">张三</li>, <li id="l2">李四</li>, <li>王五</li>]

# 找到a标签和li标签的所有的对象
print(soup.select(
    &#39;a,li&#39;))  # [<li id="l1">张三</li>, <li id="l2">李四</li>, <li>王五</li>, <a class="a1" href="" id=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ">google</a>, <a href="" title=" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" a2">百度</a>]

# 节点信息
#    获取节点内容
obj = soup.select(&#39;#d1&#39;)[0]
# 如果标签对象中 只有内容 那么string和get_text()都可以使用
# 如果标签对象中 除了内容还有标签 那么string就获取不到数据 而get_text()是可以获取数据
# 我们一般情况下  推荐使用get_text()
print(obj.string)  # None
print(obj.get_text())  # 哈哈哈

# 节点的属性
obj = soup.select(&#39;#p1&#39;)[0]
# name是标签的名字
print(obj.name)  # p
# 将属性值左右一个字典返回
print(obj.attrs)  # {&#39;id&#39;: &#39;p1&#39;, &#39;class&#39;: [&#39;p1&#39;]}

# 获取节点的属性
obj = soup.select(&#39;#p1&#39;)[0]
#
print(obj.attrs.get(&#39;class&#39;))  # [&#39;p1&#39;]
print(obj.get(&#39;class&#39;))  # [&#39;p1&#39;]
print(obj[&#39;class&#39;])  # [&#39;p1&#39;]
Copy after login

3.7 Parse Starbucks product name

import urllib.request
url = &#39;https://www.starbucks.com.cn/menu/&#39;
response = urllib.request.urlopen(url)
content = response.read().decode(&#39;utf-8&#39;)
from bs4 import BeautifulSoup
soup = BeautifulSoup(content,&#39;lxml&#39;)
# //ul[@class="grid padded-3 product"]//strong/text()
# 一般先用xpath方式通过google插件写好解析的表达式
name_list = soup.select(&#39;ul[class="grid padded-3 product"] strong&#39;)
for name in name_list:
    print(name.get_text())
Copy after login

How to use Python for xpath, JsonPath, and bs4?

The above is the detailed content of How to use Python for xpath, JsonPath, and bs4?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Show More

Hot Article

How to fix KB5055523 fails to install in Windows 11?
3 weeks ago By DDD
How to fix KB5055518 fails to install in Windows 10?
3 weeks ago By DDD
Roblox: Dead Rails - How To Tame Wolves
4 weeks ago By DDD
Strength Levels for Every Enemy & Monster in R.E.P.O.
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Roblox: Grow A Garden - Complete Mutation Guide
2 weeks ago By DDD
Show More

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Show More

Hot Topics

Java Tutorial
1660
14
CakePHP Tutorial
1416
52
Laravel Tutorial
1311
25
PHP Tutorial
1261
29
C# Tutorial
1234
24
Show More
Related knowledge
PHP and Python: Different Paradigms Explained PHP and Python: Different Paradigms Explained Apr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

Choosing Between PHP and Python: A Guide Choosing Between PHP and Python: A Guide Apr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Python: A Deep Dive into Their History PHP and Python: A Deep Dive into Their History Apr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

Python vs. JavaScript: The Learning Curve and Ease of Use Python vs. JavaScript: The Learning Curve and Ease of Use Apr 16, 2025 am 12:12 AM

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

How to run sublime code python How to run sublime code python Apr 16, 2025 am 08:48 AM

To run Python code in Sublime Text, you need to install the Python plug-in first, then create a .py file and write the code, and finally press Ctrl B to run the code, and the output will be displayed in the console.

Where to write code in vscode Where to write code in vscode Apr 15, 2025 pm 09:54 PM

Writing code in Visual Studio Code (VSCode) is simple and easy to use. Just install VSCode, create a project, select a language, create a file, write code, save and run it. The advantages of VSCode include cross-platform, free and open source, powerful features, rich extensions, and lightweight and fast.

Can visual studio code be used in python Can visual studio code be used in python Apr 15, 2025 pm 08:18 PM

VS Code can be used to write Python and provides many features that make it an ideal tool for developing Python applications. It allows users to: install Python extensions to get functions such as code completion, syntax highlighting, and debugging. Use the debugger to track code step by step, find and fix errors. Integrate Git for version control. Use code formatting tools to maintain code consistency. Use the Linting tool to spot potential problems ahead of time.

How to run python with notepad How to run python with notepad Apr 16, 2025 pm 07:33 PM

Running Python code in Notepad requires the Python executable and NppExec plug-in to be installed. After installing Python and adding PATH to it, configure the command "python" and the parameter "{CURRENT_DIRECTORY}{FILE_NAME}" in the NppExec plug-in to run Python code in Notepad through the shortcut key "F6".

See all articles