#py3
import urllib.request
#pycharm go declaration to search source code
def download(url):
response = urllib.request.urlopen(url, timeout = 5)
print(type(response))# class http.client.httpresponse
print(response.info())
print(download("http://ww.baidu.com"))
代码升级的问题
#py2
#coding:utf-8
import urllib2
def download(url):
response = urllib2.urlopen(url, timeout = 5)
print(type(response))# class http.client.httpresponse
print(response.info()) #包含了网站的详细信息
print(response.read()) #read source coad
#括号内是控制多少字符的问题
#写爬虫记得try catch
try:
print(download("http://ww.google.com"))
except urllib2.URLError as e:
print("网络异常", e) #抓住错误对象类型当作变量
