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See the following document for more info on URLs:
"Names and Addresses, URIs, URLs, URNs, URCs", at
http://www.w3.org/pub/WWW/Addressing/Overview.html
See also the HTTP spec (from which the error codes are derived):
"HTTP - Hypertext Transfer Protocol", at
http://www.w3.org/pub/WWW/Protocols/
Related standards and specs:
- RFC1808: the "relative URL" spec. (authoritative status)
- RFC1738 - the "URL standard". (authoritative status)
- RFC1630 - the "URI spec". (informational status)
The object returned by URLopener().open(file) will differ per
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c C si | j � } | d d k rB | d d k rB | d d !j � } n | d d k re | d j � } n | S( s8 unwrap('<URL:type://host/path>') --> 'type://host/path'.i t <i����t >i s URL:( R� ( R( ( ( s /usr/lib64/python2.7/urllib.pyR 5 s c C sv t d k r* d d l } | j d � a n t j | � } | rl | j d � } | j � | t | � d f Sd | f S( s: splittype('type:opaquestring') --> 'type', 'opaquestring'.i����Ns
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c C sY t d k r* d d l } | j d � a n t j | � } | rO | j d d � Sd | f S( sJ splituser('user[:passwd]@host[:port]') --> 'user[:passwd]', 'host[:port]'.i����Ns ^(.*)@(.*)$i i ( t _userprogR% R� RT R� RU ( Re R� R� ( ( s /usr/lib64/python2.7/urllib.pyR \ s c C s_ t d k r0 d d l } | j d | j � a n t j | � } | rU | j d d � S| d f S( s/ splitpasswd('user:passwd') -> 'user', 'passwd'.i����Ns ^([^:]*):(.*)$i i ( t _passwdprogR% R� RT t SR� RU ( R� R� R� ( ( s /usr/lib64/python2.7/urllib.pyR h s c C sn t d k r* d d l } | j d � a n t j | � } | rd | j � \ } } | rd | | f Sn | d f S( s* splitport('host:port') --> 'host', 'port'.i����Ns ^(.*):([0-9]*)$( t _portprogR% R� RT R� R� ( Re R� R� R� ( ( s /usr/lib64/python2.7/urllib.pyR u s
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s None object cannot be quotedRj N( R% t TypeErrort always_safeR/ Ro t _safe_mapt copyt updatet __getitem__t rstripR� t map( Rp RM t cachekeyt quotert safe_mapt c( ( s /usr/lib64/python2.7/urllib.pyR � s
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this seems to be the standard convention. In order to prefer lowercase
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( R� ( ( ( s /usr/lib64/python2.7/urllib.pyt getproxies_macosx_sysconf� s c C s* t � } | r t | | � St | � Sd S( s� Return True, if a host should be bypassed.
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