爬虫（一）

第一个爬虫虽然只有五行代码，但知道了很多知识：

from urllib.request import urlopen
from bs4 import BeautifulSoup
response =urlopen('http://www.baidu.com')
bs = BeautifulSoup(response.read(),"html.parser")
print (bs.title)

from urllib.request import urlopen
from bs4 import BeautifulSoup
response =urlopen('https://www.baidu.com')
bs = BeautifulSoup(response.read(),"html.parser")
print (bs.title)