Question

我正在尝试将抓取的数据保存在Postgres数据库中。我想为此使用django模型。

我以前尝试过使用Psycopg2软件包，但是我发现这是不必要的，所以我决定只使用Django模型。当我使用Psycopg2软件包时，数据也没有进入数据库。

我收到此错误：

Traceback (most recent call last):
  File "/home/xxxx/Desktop/project/django/tnapp/scrap.py", line 61, in <module>
    scraped_author = author(name='author name')
TypeError: 'NoneType' object is not callable

刮板：

import requests
from bs4 import BeautifulSoup as bs
from selenium import webdriver
from webdriver_manager.chrome import ChromeDriverManager
from collections import Counter
import psycopg2
# from sqlalchemy.dialects.postgresql import psycopg2


url = 'https://teonite.com/blog/page/{}/index.html'
all_links = []


headers = {
    'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
    'User-Agent': 'Mozilla/5.0'
}
with requests.Session() as s:
    r = s.get('https://teonite.com/blog/')
    soup = bs(r.content, 'lxml')
    article_links = ['https://teonite.com' + item['href'][2:] for item in soup.select('.post-content a')]
    all_links.append(article_links)
    num_pages = int(soup.select_one('.page-number').text.split('/')[1])


    for page in range(2, num_pages + 1):
        r = s.get(url.format(page))
        soup = bs(r.content, 'lxml')
        article_links = ['https://teonite.com' + item['href'][2:] for item in soup.select('.post-content a')]
        all_links.append(article_links)



    all_links = [item for i in all_links for item in i]

    d = webdriver.Chrome(ChromeDriverManager().install())

    contents = []
    authors = []

    for article in all_links:
        d.get(article)
        soup = bs(d.page_source, 'lxml')
        [t.extract() for t in soup(['style', 'script', '[document]', 'head', 'title'])]
        visible_text = soup.getText()
        content = soup.find('section', attrs={'class': 'post-content'})
        contents.append(content)
        author = soup.find('span', attrs={'class': 'author-content'})
        authors.append(author)
        unique_authors = list(set(authors))
        unique_contents = list(set(contents))

        try:
            print(soup.select_one('.post-title').text)
        except:
            print(article)
            print(soup.select_one('h1').text)
            break  # for debugging
    d.quit()

    scraped_author = author(name='author name')
    author.save()

型号：

from django.db import models

class author(models.Model):
    author_id = models.CharField(primary_key=True, max_length=50, editable=False)
    author_name = models.CharField(max_length=50)

    class Meta:
        ordering = ['-author_id']
        db_table = 'author'


class stats(models.Model):
    content = models.CharField(max_length=50)
    stats = models.IntegerField()

    class Meta:
        ordering = ['-stats']
        db_table = 'stats'



class authorStats(models.Model):
    author_id = models.CharField(max_length=100)
    content = models.CharField(max_length=100)
    stats = models.IntegerField()

    class Meta:
        ordering = ['stats']
        db_table = 'author_stats'

Answer 1

您有两件事叫做author；您的模型以及在抓取的内容中找到的值。

如果您遵循Python样式约定，则不会发生。您应该始终给类（包括模型）以大写字母开头的名称。您的模型应该命名为Author，而不是author（以及其他模型Stats和AuthorStats）。

TypeError：“ NoneType”对象不可调用-Beautifulsoup 4

1 个答案: