BeautifulSoup用法

中文文档手册

https://beautifulsoup.readthedocs.io/zh_CN/v4.4.0/

find_all()

find_all( name , attrs , recursive , string , **kwargs )

find_all() 方法搜索当前tag的所有tag子节点,并判断是否符合过滤器的条件.这里有几个例子:

soup.find_all("title")
# []

soup.find_all("p", "title")
# [
The Dormouse's story
]

soup.find_all("a")
# [Elsie,
#  Lacie,
#  Tillie]

soup.find_all(id="link2")
# [Lacie]

import re
soup.find(string=re.compile("sisters"))
# u'Once upon a time there were three little sisters; and their names were\n'

//使用多个条件过滤
soup.find_all(href=re.compile("elsie"), id='link1')
# [three]

//自定义属性的过滤方法
data_soup.find_all(attrs={"data-foo": "value"})
# [
foo!
]

//根据class的名字过滤标签
soup.find_all("a", class_="sister")
# [Elsie,
#  Lacie,
#  Tillie]

soup.find_all(class_=re.compile("itl"))
# [
The Dormouse's story
]

def has_six_characters(css_class):
    return css_class is not None and len(css_class) == 6

soup.find_all(class_=has_six_characters)
# [Elsie,
#  Lacie,
#  Tillie]


css_soup = BeautifulSoup('
')
css_soup.find_all("p", class_="strikeout")
# [
]

css_soup.find_all("p", class_="body")
# [
]

//使用string参数根据字符串中的内容进行过滤
soup.find_all("a", string="Elsie")
# [Elsie]