python - bs4 如何提取 标签内的文本

Question

我正在练习解析 https://coinmarketcap.com/currencies/bitcoin/我真的很想知道，我怎样才能提取此精确中的文本 <p>标签 ，因为有很多这样的信息，而我只想要一个信息。感谢您的帮助和东西。

import requests as r
from bs4 import BeautifulSoup

def find_info(self):
    api = r.get(self.url) #url is above in the description
    soup = BeautifulSoup(api.text, "html.parser")   
    soup.find_all('p')

    # and here I'm stuck.
    # I need to get the text from the chunk of HTML below.

    <p>
     <strong>
      Bitcoin price today
     </strong>
     is ₽3.795.164 RUB with a 24-hour trading volume of ₽6.527.780.409.893 RUB. Bitcoin is down,12% in the last 24 hours. The current CoinMarketCap ranking is #1, with a market cap of ₽70.707.857.530.563 RUB. It has a circulating supply of 18.631.043 BTC coins and a max. supply of 21.000.000 BTC coins.
    </p>

我以不同的方式尝试过，但是在许多 p 标签中，我不知道如何获得这个确切的标签。

Answer 1

使用 css selector捕获你想要的段落。
就是这样:

import requests
from bs4 import BeautifulSoup

page = requests.get("https://coinmarketcap.com/currencies/bitcoin/").content
print(BeautifulSoup(page, "html.parser").select_one('.about___1OuKY p').getText())

输出:

Bitcoin price today is $51,393.64 USD with a 24-hour trading volume of $88,784,693,272 USD. Bitcoin is up 4.87% in the last 24 hours. The current CoinMarketCap ranking is #1, with a market cap of $957,517,202,639 USD. It has a circulating supply of 18,631,043 BTC coins and a max. supply of 21,000,000 BTC coins.