为什么我会收到“NoneType”对象没有属性“absolute_links”错误？

如何解决为什么我会收到“NoneType”对象没有属性“absolute_links”错误？

我是 Python 和编码的菜鸟，所以请对我的回答放轻松，我不懂很多术语，所以请用简单的术语回答我。

我试图用我已经在其他网站上成功使用的代码抓取一个网站，但现在它不适用于这个网站。它说“nonetype”对象没有“absolute_links”属性，但我不确定为什么。我尝试了多个不同的类、部分的“jobs”字符串，我相信它们是正确的，因为它包含我需要的 a/href。谁能告诉我哪里出错了以及如何纠正它？ 这是错误代码

 for item in jobs.absolute_links:
AttributeError: 'nonetype' object has no attribute 'absolute_links'

这是我的代码，我已经删除了大部分类别列表，所以它没有那么长。

from requests_html import HTMLSession
import re
import pandas as pd

url = 'https://jobs.zalando.com/en/jobs/1621977-maintenance-shift-leader-in-intralogistics/?gh_src=22377bdd1us'
departmentcategories = {
    "android": "Software Development","social media": "Marketing","content ": "Marketing","sales": "Sales","ecommerce": "Ecommerce",}

languagecategories = {
    " and ": "English"," und ": "German"," et ": "french"," y ": "Spanish"," e ": "Spanish","German": "German","Italian": "Italian","french": "french","Spanish": "Spanish","Dutch": "Dutch",}

experiencecategories = {
    "senior": "Mid Senior Level","Junior": "Entry Level","VP ": "Executive","Director": "Director","Head of ": "Mid Senior Level",}

s = HTMLSession()
r = s.get(url)

r.html.render(sleep=1)

jobs = r.html.find('ul.cards-container',first=True)

#Section for reviewing department,language,categories

def get_department_categories(department):
    depcats = []
    for k,v in departmentcategories.items():
        if re.search(k,department,re.IGnorECASE):
            depcats.append(v)
    return depcats
 
def get_language_categories(language):
    langcats = []
    for k,v in languagecategories.items():
        if re.search(k,re.IGnorECASE):
            langcats.append(v)
    return langcats 

def get_experience_categories(experience):
    expcats = []
    for k,v in experiencecategories.items():
        if re.search(k,experience,re.IGnorECASE):
            expcats.append(v)
    return expcats 

#Section for job title,city,and country

jobtitles=[]
cities=[]
countries=[]
departments=[]
experiencelevels=[]
jobpostlinks=[]
languages=[]
urllinks=[]

for item in jobs.absolute_links:
    r = s.get(item)
    urllinks.append(item)

    job_title = r.html.xpath('//*[@id="root"]/div/div[2]/div[3]/div[1]/div[1]/h1',first=True).text

    jobtitles.append(job_title)

    city = r.html.xpath('/html/body/div[1]/div/div[2]/div[3]/div[2]/div[2]/div/div[1]/div[1]',first=True).text

    cities.append(city)  
        
    country = r.html.xpath('/html/body/div[1]/div/div[2]/div[3]/div[2]/div[2]/div/div[1]/div[1]',first=True).text

    if country == ('Berlin,Germany'):
        country = 'Germany'

    countries.append(country)  
    
    #Section for the department,languages,and experience level

    #Deparment section and job title
    department = r.html.xpath('/html/body/div[1]/div/div[2]/div[3]/div[2]/div[2]/div/div[1]/div[5]',first=True).text and r.html.xpath('//*[@id="root"]/div/div[2]/div[3]/div[1]/div[1]/h1',first=True).text
    department_cats = get_department_categories(department)
    departments.append(department_cats)

    #What we're looking for section
    language = r.html.xpath('/html/body/div[1]/div/div[2]/div[3]/div[2]/div[1]/div/ul[2]',first=True).text
    language_cats = get_language_categories(language)
    languages.append(language_cats)

    #experience section
    experience = r.html.xpath('/html/body/div[1]/div/div[2]/div[3]/div[2]/div[2]/div/div[1]/div[4]',first=True).text and r.html.xpath('//*[@id="job"]/div[1]/div[1]/div[1]/h1',first=True).text
    experience_cats = get_experience_categories(experience)
    experiencelevels.append(experience_cats)

print("-"*10)    
print(job_title,country,"Zalando",",".join(department_cats),".join(experience_cats),".join(language_cats),"Fashion",item)
    
df = pd.DataFrame({'Job Title':jobtitles,'City':cities,'Country':countries,'Department Tags':departments,'Language Tags':languages,'Experience Tags':experiencelevels,'Link':urllinks})
df.to_csv("zalando.csv",encoding='utf-8')

解决方法

似乎“jobs.absolute_links”是空的。

在给出错误的行之前调试添加：

print (jobs.absolute_links)

看看它是否包含任何值

,

当它显示 object has no attribute 'absolute_links' 时，它告诉您您已将 None 分配给您的代码试图从中检索 absolute_links 的变量。如果您的代码如下所示：

if not jobs:
  print("No jobs")
  return
for item in jobs.absolute_links:

那么就不会有那个错误了。