Beautifulsoup 使用笔记

1.在线文档 http://www.crummy.com/software/BeautifulSoup/bs4/doc/

2.常用方法

• 选择器 find_all(name, attrs, recursive, text, limit, **kwargs)

3.主要调用方法

4.完整代码

#-*- coding:utf-8 -*-

from bs4 import BeautifulSoup;

def main():
	html = """
	 
	
The Dormouse's story
 
	
Once upon a time there were three little sisters; and their names were
	Elsie,
	Lacie and
	Tillie;
	and they lived at the bottom of a well.
 
	
...
	"""
	# print html_doc  
	soup = BeautifulSoup(html)
	print soup.get_text()				#获得文本
	print soup.find_all('title') 		#获取标题 
	print soup.find_all('a')			#获取链接
	print soup.find_all(id="link2")		#根据ID来获取HTML元素 
	print soup.find_all("a",class_="cla")  #根据class来获取HTML元素

	#根据class属性来选择
	print soup.find_all("a", class_="sister")
	print soup.select("p.title")
	#多重属性来选择
	print soup.find_all("a", attrs={"class": "sister"})
	#根据文本来选择
	print soup.find_all(text="Elsie")
	print soup.find_all(text=["Tillie", "Elsie", "Lacie"])
	#限制查询的个数
	print soup.find_all("a", limit=2)
 
if __name__ == '__main__':
	main()