python - 我想从给定的网页中提取 vwap 值

Question

from bs4 import BeautifulSoup as BS
url="https://nseindia.com/live_market/dynaContent/live_watch/get_quote/GetQuote.jsp?symbol=KOTAKBANK&illiquid=0&smeFlag=0&itpFlag=0"

page=urllib.request.Request(url,headers={'User-Agent': 'Mozilla/5.0'}) 
infile=urllib.request.urlopen(page).read()
data = infile.decode('ISO-8859-1') # Read the content as string decoded with ISO-8859-1


print (soup.find('span', {'id':'vwap'}).text)

我正在 jupyter 中运行此代码；我希望输出在网页上显示为 VWAP 的值，但没有显示任何内容。

Answer 1

您可以从另一个标签中提取，该标签的字符串包含许多有用的信息，包括使用 json 加载后的价格

import requests
import json
from bs4 import BeautifulSoup as bs

r = requests.get('https://nseindia.com/live_market/dynaContent/live_watch/get_quote/GetQuote.jsp?symbol=KOTAKBANK&illiquid=0&smeFlag=0&itpFlag=0')
soup = bs(r.content, 'lxml')
data = json.loads(soup.select_one('#responseDiv').text.strip())
print(data['data'][0]['averagePrice'])