使用 Beautifulsoup 和选择器检索内容

Question

试图检索嵌入在 html 中的内容（文本）。没有得到内容。

尝试使用格式中的选择器查找 price_box:
price_box = soup2.find('div', attrs={'title class': 'Fw(600)'})

# Import libraries
import requests
import urllib.request
import time
from bs4 import BeautifulSoup

# Set the URL you want to webscrape from
url = 'https://finance.yahoo.com/quote/NVDA?p=NVDA'

# Connect to the URL
response = requests.get(url)

# Parse HTML and save to BeautifulSoup object¶
soup = BeautifulSoup(response.text, "html.parser")

beta = soup.find('h1')
#print (beta)

link = beta.contents

variable = 'NVDA - NVIDIA Corporation'
test = 'NVDA - NVIDIA Corporation'

#<..>

url2 = 'https://finance.yahoo.com/calendar/earnings?from=2019-09-01&to=2019-09-07&day=2019-09-01'

response2 = requests.get(url2)
soup2 = BeautifulSoup(response2.text, "html.parser")
# alpha = soup2.find('')

# div = soup.find('a', {class_ ='D(ib) '})
# text = div.string

price_box = soup2.find('div', attrs={'title class': 'Fw(600)'})
#price = price_box.text
print("Price Box: "+ str(price_box)) # THIS IS WHAT I WANT

希望看到“Senea”。而是看到“无” - “价格框： 无”

Answer 1

很多内容都是动态的。您可以轻松地对这些信息进行正则表达式

import requests, re

p = re.compile(r'"YFINANCE:(.*?)"')
r = requests.get('https://finance.yahoo.com/calendar/earnings?from=2019-09-01&to=2019-09-07&day=2019-09-01&guccounter=1')
print(p.findall(r.text)[0])

另一种方法是完全避免动态外观类

import requests
from bs4 import BeautifulSoup as bs

r = requests.get('https://finance.yahoo.com/calendar/earnings?from=2019-09-01&to=2019-09-07&day=2019-09-01&guccounter=1')
soup = bs(r.content, 'lxml')
print(soup.select_one('#cal-res-table a').text)

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阅读：

1. css selectors