find_all usage Python (bs4, BeautifulSoup)

find_all () Brief description:

find_all()

find_all () method searches all child nodes of the current tag of the tag, and determines whether the conditions of the filter

Use a:

rs=soup.find_all('a')

Soup will return all of the content hyperlinks

There are similar rs.find_all ( 'span'), rs.find_all ( 'title'), rs.find_all ( 'h1')

Can be added to the search criteria, eg:

rs.find_all('img',{'class':'news-img'})

We will return all of the class attribute of the img content of news-img

Usage of Two:

true here refers to select all tags have the id attribute

soup.find_all(id=True)

Return result:

  [<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>]

Use three:

soup.find_all("a", string="Elsie")

Soso can string contents of the document by the string parameters. As with the optional parameter value name, string parameter accepts strings, regular expressions, lists, True

Usage four:

soup.find_all("a", limit=2)

Limit is the number of lookups to find the number here twice