python之抓取谷歌财经(BeautifulSoup)_编程设计

我正在尝试抓取 Google 财经，并根据 Chrome 中的网页检查器获取“相关股票”表，该表具有 ID“cc-table”和类“gf-table”。 (示例链接:https://www.google.com/finance?q=tsla)

但是当我运行 .find("table") 或 .findAll("table") 时，这个表没有出现。我可以在 Python 的 HTML 内容中找到带有表内容的 JSON 对象，但不知道如何获取它。有什么想法吗？

请您参考如下方法:

该页面使用 JavaScript 呈现。有几种方法可以渲染和抓取它。

我可以用 Selenium 抓取它。首先安装 Selenium:

sudo pip3 install selenium

然后找个司机https://sites.google.com/a/chromium.org/chromedriver/downloads

import bs4 as bs 
from selenium import webdriver   
browser = webdriver.Chrome() 
url = ("https://www.google.com/finance?q=tsla") 
browser.get(url) 
html_source = browser.page_source 
browser.quit() 
soup = bs.BeautifulSoup(html_source, "lxml") 
for el in soup.find_all("table", {"id": "cc-table"}): 
    print(el.get_text())

或者 PyQt5

from PyQt5.QtGui import *   
from PyQt5.QtCore import *   
from PyQt5.QtWebKit import *   
from PyQt5.QtWebKitWidgets import QWebPage 
from PyQt5.QtWidgets import QApplication 
import bs4 as bs 
import sys 
 
class Render(QWebPage):   
    def __init__(self, url):   
        self.app = QApplication(sys.argv)   
        QWebPage.__init__(self)   
        self.loadFinished.connect(self._loadFinished)   
        self.mainFrame().load(QUrl(url))   
        self.app.exec_()   
 
    def _loadFinished(self, result):   
        self.frame = self.mainFrame()   
        self.app.quit()   
 
url = "https://www.google.com/finance?q=tsla" 
r = Render(url)   
result = r.frame.toHtml() 
soup = bs.BeautifulSoup(result,'lxml') 
for el in soup.find_all("table", {"id": "cc-table"}): 
    print(el.get_text())

或者 Dryscrape

import bs4 as bs 
import dryscrape 
 
url = "https://www.google.com/finance?q=tsla" 
session = dryscrape.Session() 
session.visit(url) 
dsire_get = session.body() 
soup = bs.BeautifulSoup(dsire_get,'lxml') 
for el in soup.find_all("table", {"id": "cc-table"}): 
    print(el.get_text())

所有输出:

Valuation▲▼Company name▲▼Price▲▼Change▲▼Chg %▲▼d | m | y▲▼Mkt Cap▲▼TSLATesla Inc328.40-1.52-0.46%53.69BDDAIFDaimler AG72.94-1.50-2.01%76.29BFFord Motor Company11.53-0.17-1.45%45.25BGMGeneral Motors Co...36.07-0.34-0.93%53.93BRNSDFRENAULT SA EUR3.8197.000.000.00%28.69BHMCHonda Motor Co Lt...27.52-0.18-0.65%49.47BAUDVFAUDI AG NPV840.400.000.00%36.14BTMToyota Motor Corp...109.31-0.53-0.48%177.79BBAMXFBAYER MOTOREN WER...94.57-2.41-2.48%56.93BNSANYNissan Motor Co L...20.400.000.00%42.85BMMTOFMITSUBISHI MOTOR ...6.86+0.091.26%10.22B

编辑

QtWebKit 在 Qt 5.5 上游被弃用并在 5.6 中被移除。

你可以切换到 PyQt5.QtWebEngineWidgets