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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+ /opt/alt/python27/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 s� i } xP t j j � D]? \ } } | j � } | r | d d k r | | | d <q q Wd t j k r{ | j d d � n xg t j j � D]V \ } } | d d k r� | j � } | r� | | | d <q� | j | d d � q� q� W| S( s� Return a dictionary of scheme -> proxy server URL mappings.
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this seems to be the standard convention. In order to prefer lowercase
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i����t _proxyt REQUEST_METHODR� N( RD t environR� R� t popR% ( R" Ri R� ( ( s+ /opt/alt/python27/lib64/python2.7/urllib.pyt getproxies_environmentc s c C s� | d k r t � } n y | d } Wn t k
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� r� d Sq� q� Wd S( s� Test if proxies should not be used for a particular host.
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This function uses the MacOSX framework SystemConfiguration
to fetch the proxy information.
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c C s t � S( s� Return a dictionary of scheme -> proxy server URL mappings.
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( R� ( ( ( s+ /opt/alt/python27/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.
Checks proxy settings gathered from the environment, if specified, or
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r* | SXy!| j | j d � } | j | d � d } | rAt | j | d � d � } d | k r� x� | j d � D]Y } | j d d � \ } } d d l } | j d
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