soup = BeautifulSoup(requests.get(url).text, 'html.parser')
soup.find('span', class_='item_hot_topic_title') 这个是只能找到第一个span标签 样式为 class='item_hot_topic_title'，就算后面还有匹配的也不去获取
span.find_all('span', class_='item_hot_topic_title') 这个就能找到页面上所有span标签 样式为 class='item_hot_topic_title'
soup.find_all(["a", "b"]) 找到所有a和b的标签已数组形式返回,传参为 True 返回页面所有标签已数组形式
其他用法:
soup.find_all("title") # [<title>The Dormouse's story</title>] soup.find_all("p", "title") # [<p class="title"><b>The Dormouse's story</b></p>] soup.find_all("a") # [<a class="sister" href="http://example.com/elsie" id="link1">Elsie</a>, # <a class="sister" href="http://example.com/lacie" id="link2">Lacie</a>, # <a class="sister" href="http://example.com/tillie" id="link3">Tillie</a>] soup.find_all(id="link2") # [<a class="sister" href="http://example.com/lacie" id="link2">Lacie</a>] import re soup.find(text=re.compile("sisters")) # u'Once upon a time there were three little sisters; and their names were\n'
其他方法见官网真的很多https://www.crummy.com/software/BeautifulSoup/bs4/doc/index.zh.html#id85