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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
protocol. All you know is that is has methods read(), readline(),
readlines(), fileno(), close() and info(). The read*(), fileno()
and close() methods work like those of open files.
The info() method returns a mimetools.Message object which can be
used to query various info about the object, if available.
(mimetools.Message objects are queried with the getheader() method.)
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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 ! 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
^([^/:]+):i ( t _typeprogR$ R� t compileR� t groupR� Rq ( R' R� R� R� ( ( s /usr/lib64/python2.7/urllib.pyR * s c C s� t d k r$ t j d t j � a n t j | � } | r� | j d � } | j d � } | rz | j d � rz d | } n | | f Sd | f S( s; splithost('//host[:port]/path') --> 'host[:port]', '/path'.s //([^/#?]*)(.*)i i R� N( t _hostprogR$ R� RQ t DOTALLR� RR R� ( R' R� t host_portRk ( ( s /usr/lib64/python2.7/urllib.pyR 8 s
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� RQ R� RR ( Rc R� R� ( ( s /usr/lib64/python2.7/urllib.pyR H 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� RQ t SR� RR ( R� R� R� ( ( s /usr/lib64/python2.7/urllib.pyR T s c C sY t d k r* d d l } | j d � a n t j | � } | rO | j d d � S| d f S( s* splitport('host:port') --> 'host', 'port'.i����Ns ^(.*):([0-9]+)$i i ( t _portprogR$ R� RQ R� RR ( Rc R� R� ( ( s /usr/lib64/python2.7/urllib.pyR a s c C s� t d k r* d d l } | j d � a n t j | � } | r� | j d d � \ } } y" | sl t d � n t | � } Wn t k
r� d } n X| | f S| | f S( s� Split host and port, returning numeric port.
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t | | � � S( s quote('abc def') -> 'abc%20def'
Each part of a URL, e.g. the path info, the query, etc., has a
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RFC 2396 Uniform Resource Identifiers (URI): Generic Syntax lists
the following reserved characters.
reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" |
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but not necessarily in all of them.
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is reserved, but in typical usage the quote function is being
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reserved characters.
s None object cannot be quotedRh N( R$ t TypeErrort always_safeR. Rl t _safe_mapt copyt updatet __getitem__t rstripR� t map( Rm RK t cachekeyt quotert safe_mapt c( ( s /usr/lib64/python2.7/urllib.pyR � s
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Rh c C s< d | k r/ t | | d � } | j d d � St | | � S( s9 Quote the query fragment of a URL; replacing ' ' with '+'Rr Rq ( R RT ( Rm RK ( ( s /usr/lib64/python2.7/urllib.pyR s i c C s� t | d � r | j � } nb y- t | � rJ t | d t � rJ t � n Wn2 t k
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i����t _proxyt REQUEST_METHODR~ N( R? t environR R� t popR$ ( R" Re R� ( ( s /usr/lib64/python2.7/urllib.pyt getproxies_environmentL s
c C s� t j j d d � p' t j j d d � } | d k r: d St | � \ } } g | j d � D] } | j � ^ q\ } x6 | D]. } | r{ | j | � s� | j | � r{ d Sq{ Wd S( s� Test if proxies should not be used for a particular host.
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