(转)Python3.X如何下载安装urllib2包 ？

python 3.X版本是不需要安装：urllib2包的，urllib和urllib2包集合成在一个包了
那现在问题是：
在python3.x版本中，如何使用：urllib2.urlopen()？

答：
import urllib.request
resp=urllib.request.urlopen(http://www.baidu.com)
来源：https://www.cnblogs.com/zdlfb/p/6130724.html

附：

Python2 urllib2 与 Python3 urllib.request API对照

python2	python3
urllib2.urlopen()	urllib.request.urlopen()
urllib2.install_opener()	urllib.request.install_opener()
urllib2.build_opener()	urllib.request.build_opener()
urllib2.URLError	urllib.error.URLError
urllib2.HTTPError	urllib.error.HTTPError
urllib2.Request	urllib.request.Request
urllib2.OpenerDirector	urllib.request.OpenerDirector
urllib2.BaseHandler	urllib.request.BaseHandler
urllib2.HTTPDefaultErrorHandler	urllib.request.HTTPDefaultErrorHandler
urllib2.HTTPRedirectHandler	urllib.request.HTTPRedirectHandler
urllib2.HTTPCookieProcessor	urllib.request.HTTPCookieProcessor
urllib2.ProxyHandler	urllib.request.ProxyHandler
urllib2.HTTPPasswordMgr	urllib.request.HTTPPasswordMgr
urllib2.HTTPPasswordMgrWithDefaultRealm	urllib.request.HTTPPasswordMgrWithDefaultRealm
urllib2.AbstractBasicAuthHandler	urllib.request.AbstractBasicAuthHandler
urllib2.HTTPBasicAuthHandler	urllib.request.HTTPBasicAuthHandler
urllib2.ProxyBasicAuthHandler	urllib.request.ProxyBasicAuthHandler
urllib2.AbstractDigestAuthHandler	urllib.request.AbstractDigestAuthHandler
urllib2.HTTPDigestAuthHandler	urllib.request.HTTPDigestAuthHandler
urllib2.ProxyDigestAuthHandler	urllib.request.ProxyDigestAuthHandler
urllib2.HTTPHandler	urllib.request.HTTPHandler
urllib2.HTTPSHandler	urllib.request.HTTPSHandler
urllib2.FileHandler	urllib.request.FileHandler
urllib2.FTPHandler	urllib.request.FTPHandler
urllib2.CacheFTPHandler	urllib.request.CacheFTPHandler
urllib2.UnknownHandler	urllib.request.UnknownHandler