python.beatifulsoup入门

#coding=utf-8

import urllib2
from BeautifulSoup import BeautifulSoup as bs

url_addr = 'http://car.autohome.com.cn/baoyang/detail_74_442_0_0_0_57.html'

def save_to_file(content, fileName):
with open(fileName, 'w+') as f:
if not f:
return False
f.write(content)
f.close()

def parse_content(content):
soup = bs(content)
tds = soup.findAll('td')
for i in tds:
print i.text

def is_unicode(c):
if isinstance(c, unicode):
return True
return False

def is_asii(c):
if isinstance(c, str):
return True
return False

if __name__ == '__main__':

content = urllib2.urlopen(url_addr).read()

#对于任何格式的str先转换为中间编码unicode
#调用decode转换为unicode编码【根据自身的编码】
#然后再调用encode将unicode转换为指定的编码

#将content【编码为gb2312】转换为unicode编码
c = content.decode('gb2312')

print('c is unicode:', is_unicode(c))
#print(c)
save_to_file(c.encode('gb2312'), 'd:/content.html')
parse_content(content)