NoneType object has no attribute find_all error using beautiful Soup

Question

我正在尝试阅读以下内容：

我的目标是阅读此页面上的每个职位 - https://www.cvbankas.lt/?miestas=Vilnius&padalinys%5B%5D=&keyw=python

我试过的：

import requests
from bs4 import BeautifulSoup

URL = 'https://www.cvbankas.lt/?miestas=Vilnius&padalinys%5B%5D=&keyw=python'
page = requests.get(URL).text
soup = BeautifulSoup(page, 'html.parser')
results = soup.find(id='ResultsContainer')
 
# Look for Python jobs
python_jobs = results.find_all("div", string=lambda t: "python" in t.lower())

for p_job in python_jobs:
    link = p_job.find("h3")["href"]
    print(p_job.text.strip())
    print(f"Apply here: {link}\n")

但我收到以下错误：

AttributeError: 'NoneType' object 没有属性 'find_all'

如何阅读所有标题？

Answer 1

问题是，没有任何带有id="ResultsContainer"的标签。 您可以使用文本 Python 搜索所有<h3>标签，然后找到 url 的父<a>标签：

import requests
from bs4 import BeautifulSoup


URL = 'https://www.cvbankas.lt/?miestas=Vilnius&padalinys%5B%5D=&keyw=python'
page = requests.get(URL).text
soup = BeautifulSoup(page, 'html.parser')

results = soup.find_all('h3', text=lambda t: 'python' in t.lower())
for r in results:
    print(r.text)
    print(r.find_parent('a')['href'])
    print('-' * 80)

印刷：

Senior Python Developer
https://www.cvbankas.lt/senior-python-developer-vilniuje/1-6719819
--------------------------------------------------------------------------------
Full Stack Engineer (React + Python)
https://www.cvbankas.lt/full-stack-engineer-react-python-vilniuje/1-6665723
--------------------------------------------------------------------------------
Python programuotojas (Mid-Senior)
https://www.cvbankas.lt/python-programuotojas-mid-senior-vilniuje/1-6693547
--------------------------------------------------------------------------------
Python Developer
https://www.cvbankas.lt/python-developer-vilniuje/1-6604883
--------------------------------------------------------------------------------

Answer 2

您的问题是没有元素具有 id "ResultsContainer" 。

但是参考页面的结构，您可以使用css selector直接获取所有信息：

import requests
from bs4 import BeautifulSoup

URL = 'https://www.cvbankas.lt/?miestas=Vilnius&padalinys%5B%5D=&keyw=python'
page = requests.get(URL).text
soup = BeautifulSoup(page, 'html.parser')
results = soup.select("div.list_cell > .list_h3")
for i in results:
    print(i.text)

结果：

Data Engineer
Data Analyst
VYRESNYSIS INŽINIERIUS STRATEGIJOS IR TYRIMŲ SKYRIUJE
Senior Python Developer
Full Stack Engineer (React + Python)
DevOps Engineer
Linux Systems Automation Engineer
Big Data Developer
Big Data Devops Engineer
Python programuotojas (Mid-Senior)
DATA SCIENTIST
DEVOPS INŽINIERIAUS (e-commerce platformos produktų optimizavimas užsienio rinkoms)
LINUX Sistemų administratorius (-ė)
QA engineer
Blockchain Developer
Backend Software Engineer
FW/HW Quality Assurance Engineer
Software developer in Test
Python Developer
Senior Backend Engineer

Answer 3

查看我的代码：

import requests
from bs4 import BeautifulSoup
URL = 'https://www.cvbankas.lt/?miestas=Vilnius&padalinys%5B%5D=&keyw=python'
page = requests.get(URL).text
soup = BeautifulSoup(page, 'html.parser')
h3_tags = soup.findAll("h3", {"class": "list_h3"})
for x in h3_tags:
    if "Python" in x.text:
        print(x.text)
        print(x.find_parent('a')['href'])
        print()

output 是：

Senior Python Developer
https://www.cvbankas.lt/senior-python-developer-vilniuje/1-6719819

Full Stack Engineer (React + Python)
https://www.cvbankas.lt/full-stack-engineer-react-python-vilniuje/1-6665723

Python programuotojas (Mid-Senior)
https://www.cvbankas.lt/python-programuotojas-mid-senior-vilniuje/1-6693547

Python Developer
https://www.cvbankas.lt/python-developer-vilniuje/1-6604883

Answer 4

用以下代码替换您的代码：

import requests
from lxml import etree
from bs4 import BeautifulSoup

URL = 'https://www.cvbankas.lt/?miestas=Vilnius&padalinys%5B%5D=&keyw=python'
page = requests.get(URL).text
soup = BeautifulSoup(page, 'html.parser')

dom = etree.HTML(str(soup))
elements = dom.xpath('//h3[@class="list_h3"]')
for element in elements:
  print(element.text)

Answer 5

这个方法： soup.find(id='ResultsContainer')没有找到符合条件的元素，因此返回None 。

在这一行中： python_jobs = results.find_all("div", string=lambda t: "python" in t.lower()) ， results的值为None 。

None.find_all不存在。 ( AttributeError: 'NoneType' object has no attribute 'find_all' )