（12）爬虫beautifulsoup使用

from bs4 import BeautifulSoup

str = '''
<title>尚学堂</title>
<div class='info' float='left'>Welcome to SXT</div>
<div class='info' float='right'>
    <span>Good Good Study</span>
    <a href='www.bjsxt.cn'></a>
    <strong><!--没用--></strong>
</div>
soup=BeautifulSoup(str,'lxml')
print(soup.title)

print(soup.div.attrs)

print(soup.div.text)
print(soup.div.string)
print(soup.strong.prettify)
print('__'*100)
print(soup.find_all(class_='info'))


print(soup.find_all('div',attrs={'float':'left'}))


print(soup.select('title'))

print(soup.select('title')[0].text)
print(soup.select('div')[1].select('a'))