如何解决python bs4 find() return none
您好专家！我使用 bs4 find() 函数没有得到任何结果，即使它存在于 html 中。我正在尝试使用 tab_content 类获取所有 div。我在此链接 https://sofad.qc.ca/index.php?id_product=464&controller=product&id_lang=1 上找到了这个。所以请建议我如何以正确的方式做到这一点。 这是代码：
from bs4 import BeautifulSoup as bs
import requests
url = 'https://sofad.qc.ca/index.PHP?id_category=78&controller=category&id_lang=1'
r = requests.get(url)
soup = bs(r.content,'html.parser')
tb = soup.find_all('a',class_='product_img_link')
for item in tb:
link = item.get('href')
r = requests.get(link)
soup = bs(r.content,'lxml')
try:
title = soup.find('h1',{'itemprop':'name'}).text
except:
title = ''
try:
price = soup.find('span',id='our_price_display').text
except:
price = ''
try:
img = soup.find('img',id='bigpic').get('src')
except:
img = ''
try:
dv = " ".join(soup.find('div',class_='rte').text.split())
except:
dv = ''
for dvv in soup.find_all('div',class_='tab_content'):
print(dvv)
解决方法
据我所知，语法是 height: 3px; NOT WITH x AS (
SELECT *
FROM (VALUES
('2020-05-17 8:50:24'::timestamp,'2020-05-17 12:12:43'::timestamp,100),('2020-05-22 17:29:19'::timestamp,'2020-05-22 19:44:46'::timestamp,98),('2020-05-06 17:22:51'::timestamp,'2020-05-06 19:11:41'::timestamp,84),('2020-05-06 19:25:15'::timestamp,'2020-05-06 20:35:53'::timestamp,68),('2020-05-06 15:04:52'::timestamp,'2020-05-06 17:05:13'::timestamp,90),('2021-01-11 13:32:45'::timestamp,'2021-01-11 15:57:46'::timestamp,104),('2020-05-26 13:19:05'::timestamp,'2020-05-26 16:05:12'::timestamp,105),('2020-12-05 7:08:31'::timestamp,'2020-12-05 10:22:00'::timestamp,77)
) x (race_start_time,race_end_time,total_money_raised)
)
SELECT a.race_start_time,a.race_end_time,a.total_money_raised,SUM(b.total_money_raised)
FROM x a
JOIN x b
ON b.race_start_time BETWEEN a.race_start_time AND dateadd(day,1,a.race_start_time)
GROUP BY 1,2,3
ORDER BY 1;
！
要查找类为 findAll 的 find_all：
div仅供参考，该页面的 html 树中没有带有 tab_content 类的 div。
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