我正在尝试使用下面的代码来抓取股票市值。起初我传统上尝试获取使用 bs4 的列表market cap values。当我以前 print(x.find('span',{'class': 'Trsdu(0.3s)'}).text)这样做时，我遇到了AttributeError: 'NoneType' object has no attribute 'text'错误。 for x in marketCapArray: print(x.find('span',{'class': 'Trsdu(0.3s)'}).text)我不知道如何解决特定于我的代码的上述错误。因此，我采取了另一种方法，使用正则表达式来简单地提取所需的值，并在下面进行了尝试。主要代码import bs4import reimport requestsfrom bs4 import BeautifulSoupfrom urllib.request import urlopendef pickTopGainers(): url = 'https://in.finance.yahoo.com/gainers?offset=0&count=100' page = urlopen(url) soup = bs4.BeautifulSoup(page,"html.parser") marketCapArray = soup.find_all('td', {'class': 'Va(m) Ta(end) Pstart(20px) Pend(10px) W(120px) Fz(s)', 'aria-label': 'Market cap'}) print(str(marketCapArray)) xi = re.findall("........</span>", str(marketCapArray)) # regex-use-1 pi = re.sub("(</span>|....>N/A|>|\")","", str(xi)) print(pi)pickTopGainers()结果这就是print(str(marketCapArray)会输出的内容。（只粘贴了一部分）[<td aria-label="Market cap" class="Va(m) Ta(end) Pstart(20px) Pend(10px) W(120px) Fz(s)" colspan="" data-reactid="93"><span class="Trsdu(0.3s)" data-reactid="94">159.404M</span></td>, <td aria-label="Market cap" class="Va(m) Ta(end) Pstart(20px) Pend(10px) W(120px) Fz(s)" colspan="" data-reactid="119"><span class="Trsdu(0.3s)" data-reactid="120">533.97M</span></td>, <td aria-label="Market cap" class="Va(m) Ta(end) Pstart(20px) Pend(10px) W(120px) Fz(s)" colspan="" data-reactid="145"><span data-reactid="146">N/A</span></td>, <td aria-label="Market cap" class="Va(m) Ta(end) Pstart(20px) Pend(10px) W(120px) Fz(s)" colspan="" data-reactid="171"><span class="Trsdu(0.3s)" data-reactid="172">2.952B</span></td>, <td aria-label="Market cap" class="Va(m) Ta(end) Pstart(20px) Pend(10px) W(120px) Fz(s)" colspan="" data-reactid="197"><span class="Trsdu(0.3s)" data-reactid="198">9.223B</span></td>, 这是 的输出print(pi)。也是最终的输出。['159.404M', '533.97M', '', '2.952B', '9.223B', '']问题如何避免在上面使用正则表达式替换（re.sub）Main Code来实现给定的最终输出pi？或者建议我正确的方法来做到这一点。我觉得我的正则表达式令人不快。
1 回答
qq_遁去的一_1
TA贡献1725条经验 获得超7个赞
<table>您可以在存储所有信息的 内逐行迭代。例如：
import requests
from bs4 import BeautifulSoup
url = 'https://in.finance.yahoo.com/gainers?offset=0&count=100'
soup = BeautifulSoup(requests.get(url).content, 'html.parser')
fmt_string = '{:<15} {:<60} {:<10} {:<10} {:<10} {:<10} {:<10} {:<10} {:<10}'
print(fmt_string.format('Symbol', 'Name', 'Price(int)', 'Change', '% change', 'Volume', 'AvgVol(3M)', 'Market Cap', 'PE ratio'))
for row in soup.select('table:has(a[href*="/quote/"]) > tbody > tr'):
cells = [td.get_text(strip=True) for td in row.select('td')]
print(fmt_string.format(*cells[:-1]))
印刷：
Symbol Name Price(int) Change % change Volume AvgVol(3M) Market Cap PE ratio
CCCL.NS Consolidated Construction Consortium Limited 0.2000 +0.0500 +33.33% 57,902 290,154 159.404M N/A
KSERASERA.NS KSS Limited 0.2500 +0.0500 +25.00% 1.607M 2.601M 533.97M N/A
BONLON.BO BONLON INDUSTRIES LIMITED 21.60 +3.60 +20.00% 16,000 N/A N/A N/A
MENONBE.NS Menon Bearings Limited 52.80 +8.80 +20.00% 2.334M 65,713 2.952B 25.05
RPOWER.NS Reliance Power Limited 3.3000 +0.5500 +20.00% 127.814M 18.439M 9.223B N/A
11DPD.BO Nippon India Mutual Fund 0.0600 +0.0100 +20.00% 190 N/A N/A N/A
ABFRLPP-E1.NS Aditya Birla Rs.5 ppd up 105.65 +17.60 +19.99% 1.238M N/A N/A N/A
500110.BO Chennai Petroleum Corporation Limited 64.55 -0.15 -0.23% 42,765 61,584 9.612B N/A
ABFRLPP.BO Aditya Birla Fashion and Retai 106.05 +17.65 +19.97% 387,703 N/A N/A N/A
RADIOCITY.NS Music Broadcast Limited 21.35 +3.55 +19.94% 12.657M 1.013M 7.38B 124.13
RADIOCITY.BO Music Broadcast Limited 21.35 +3.55 +19.94% 898,070 90,236 7.38B 124.13
MENONBE.BO Menon Bearings Limited 52.65 +8.75 +19.93% 137,065 8,648 2.951B 24.98
MTNL.BO Mahanagar Telephone Nigam Limited 10.72 +1.78 +19.91% 1.142M 156,275 6.754B N/A
...and so on.
添加回答
举报
0/150
提交
取消