urllib库在python2和python3环境下的使用区别
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| Python 2 name | Python 3 name |
| urllib.urlretrieve() | urllib.request.urlretrieve() |
| urllib.urlcleanup() | urllib.request.urlcleanup() |
| urllib.quote() | urllib.parse.quote() |
| urllib.quote_plus() | urllib.parse.quote_plus() |
| urllib.unquote() | urllib.parse.unquote() |
| urllib.unquote_plus() | urllib.parse.unquote_plus() |
| urllib.urlencode() | urllib.parse.urlencode() |
| urllib.pathname2url() | urllib.request.pathname2url() |
| urllib.url2pathname() | urllib.request.url2pathname() |
| urllib.getproxies() | urllib.request.getproxies() |
| urllib.URLopener | urllib.request.URLopener |
| urllib.FancyURLopener | urllib.request.FancyURLopener |
| urllib.ContentTooShortError | urllib.error.ContentTooShortError |
| 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 |
原文：https://blog.csdn.net/whatday/article/details/54710403
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