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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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all_errors( R ( ( s" /usr/local/lib/python2.5/urllib.pyR * s
c C s} t d j ol d d k } y d d k l } Wn# t j
o d d k l } n X| i | d a t i i n t S( s) Return an empty mimetools.Message object.iN( R i ( t
_noheadersR# R R R R R R] RD ( R R ( ( s" /usr/local/lib/python2.5/urllib.pyR 3 s
R c B s; e Z d Z d Z d Z d Z d Z d Z RS( s; Class used by open_ftp() for cache of open FTP connections.c C s; | | _ | | _ | | _ | | _ | | _ | i d S( N( R R Ra R R t init( R1 R R Ra R R ( ( s" /usr/local/lib/python2.5/urllib.pyR/ F s c C s~ d d k } d | _ | i | _ | i i | i | i | i i | i | i x! | i
D] } | i i | q` Wd S( Nii ( R t busyt FTPt ftpt connectRa R t loginR R R t cwd( R1 R t dir( ( s" /usr/local/lib/python2.5/urllib.pyR N s
c
C s d d k } | i | d j o d } d } n d | } d } y | i i | Wn0 | i j
o! | i | i i | n Xd } | o~ | ov y d | } | i i | } Wq| i j
o@ } t | d d
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t | d i d | i | d f S( NiR R s TYPE Ai s TYPE i s RETR i t 550s ftp errori s LIST t LISTRL ( R R ( R t endtransferR t voidcmdR R R# t ntransfercmdt
error_permR R. RY RZ R t addclosehookt makefile( R1 RH RR R t cmdt isdirt connt reason( ( s" /usr/local/lib/python2.5/urllib.pyR W s:
) c C sI | i p d Sn d | _ y | i i Wn t j
o n Xd S( Ni ( R R t voidrespR ( R1 ( ( s" /usr/local/lib/python2.5/urllib.pyR' u s
c C s8 | i y | i i Wn t j
o n Xd S( N( R' R RD R ( R1 ( ( s" /usr/local/lib/python2.5/urllib.pyRD ~ s
( R3 R4 R R/ R R R' RD ( ( ( s" /usr/local/lib/python2.5/urllib.pyR C s t addbasec B s) e Z d Z d Z d Z d Z RS( s( Base class for addinfo and addclosehook.c C s | | _ | i i | _ | i i | _ t | i d o | i i | _ n t | i d o | i i | _ n
d | _ t | i d o9 | i i | _ t | i d o | i i | _ q n d S( Nt readlinest filenoc S s d S( N( R# ( ( ( s" /usr/local/lib/python2.5/urllib.pyt <lambda> s t __iter__t next( R] Ro t readlineR8 R3 R4 R6 R7 ( R1 R] ( ( s" /usr/local/lib/python2.5/urllib.pyR/ s c C s d | i i t | | i f S( Ns <%s at %r whose fp = %r>( t __class__R3 t idR] ( R1 ( ( s" /usr/local/lib/python2.5/urllib.pyt __repr__ s c C sL d | _ d | _ d | _ d | _ | i o | i i n d | _ d S( N( R# Ro R8 R3 R4 R] RD ( R1 ( ( s" /usr/local/lib/python2.5/urllib.pyRD s
( R3 R4 R R/ R; RD ( ( ( s" /usr/local/lib/python2.5/urllib.pyR2 s R+ c B s e Z d Z d Z d Z RS( s* Class to add a close hook to an open file.c G s& t i | | | | _ | | _ d S( N( R2 R/ t closehookt hookargs( R1 R] R< R= ( ( s" /usr/local/lib/python2.5/urllib.pyR/ s c C sA t i | | i o& | i | i d | _ d | _ n d S( N( R2 RD R< R= R# ( R1 ( ( s" /usr/local/lib/python2.5/urllib.pyRD s
( R3 R4 R R/ RD ( ( ( s" /usr/local/lib/python2.5/urllib.pyR+ s t addinfoc B s e Z d Z d Z d Z RS( s. class to add an info() method to an open file.c C s t i | | | | _ d S( N( R2 R/ R\ ( R1 R] R\ ( ( s" /usr/local/lib/python2.5/urllib.pyR/ s c C s | i S( N( R\ ( R1 ( ( s" /usr/local/lib/python2.5/urllib.pyRh s ( R3 R4 R R/ Rh ( ( ( s" /usr/local/lib/python2.5/urllib.pyR> s RQ c B s) e Z d Z d Z d Z d Z RS( s9 class to add info() and geturl() methods to an open file.c C s& t i | | | | _ | | _ d S( N( R2 R/ R\ R& ( R1 R] R\ R& ( ( s" /usr/local/lib/python2.5/urllib.pyR/ s c C s | i S( N( R\ ( R1 ( ( s" /usr/local/lib/python2.5/urllib.pyRh s c C s | i S( N( R& ( R1 ( ( s" /usr/local/lib/python2.5/urllib.pyt geturl s ( R3 R4 R R/ Rh R? ( ( ( s" /usr/local/lib/python2.5/urllib.pyRQ s c C s d S( Ni ( ( t x( ( s" /usr/local/lib/python2.5/urllib.pyt _is_unicode s c C s
t | t S( N( R t unicode( R@ ( ( s" /usr/local/lib/python2.5/urllib.pyRA s c C sX t | oG y | i d } WqT t j
o! t d t | d qT Xn | S( s toBytes(u"URL") --> 'URL'.t ASCIIs URL s contains non-ASCII characters( RA t encodet UnicodeErrort repr( R& ( ( s" /usr/local/lib/python2.5/urllib.pyRP s
c C sn | i } | d d j o( | d d j o | d d !i } n | d d j o | d i } n | S( s8 unwrap('<URL:type://host/path>') --> 'type://host/path'.i t <it >i s URL:( R ( R& ( ( s" /usr/local/lib/python2.5/urllib.pyR s " c C s} t d j o d d k } | i d a n t i | } | o1 | i d } | i | t | d f Sn d | f S( s: splittype('type:opaquestring') --> 'type', 'opaquestring'.iNs
^([^/:]+):i ( t _typeprogR# R t compileR t groupR Rp ( R& R R R ( ( s" /usr/local/lib/python2.5/urllib.pyR s
"c C s` t d j o d d k } | i d a n t i | } | o | i d d Sn d | f S( s; splithost('//host[:port]/path') --> 'host[:port]', '/path'.iNs ^//([^/?]*)(.*)$i i ( t _hostprogR# R RJ R RK ( R& R R ( ( s" /usr/local/lib/python2.5/urllib.pyR s
c C si t d j o d d k } | i d a n t i | } | o t t | i d d Sn d | f S( sJ splituser('user[:passwd]@host[:port]') --> 'user[:passwd]', 'host[:port]'.iNs ^(.*)@(.*)$i i ( t _userprogR# R RJ R t mapR RK ( Ra R R ( ( s" /usr/local/lib/python2.5/urllib.pyR s
c C s` t d j o d d k } | i d a n t i | } | o | i d d Sn | d f S( s/ splitpasswd('user:passwd') -> 'user', 'passwd'.iNs ^([^:]*):(.*)$i i ( t _passwdprogR# R RJ R RK ( R R R ( ( s" /usr/local/lib/python2.5/urllib.pyR s
c C s` t d j o d d k } | i d a n t i | } | o | i d d Sn | d f S( s* splitport('host:port') --> 'host', 'port'.iNs ^(.*):([0-9]+)$i i ( t _portprogR# R RJ R RK ( Ra R R ( ( s" /usr/local/lib/python2.5/urllib.pyR + s
c C s t d j o d d k } | i d a n t i | } | of | i d d \ } } y$ | p
t d n t | } Wn t j
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d } n X| | f Sn | | f S( s Split host and port, returning numeric port.
Return given default port if no ':' found; defaults to -1.
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Return None if ':' but not a valid number.iNs ^(.*):(.*)$i i s no digits( t
_nportprogR# R RJ R RK R Rn ( Ra t defportR R R t nport( ( s" /usr/local/lib/python2.5/urllib.pyR 7 s
c C s` t d j o d d k } | i d a n t i | } | o | i d d Sn | d f S( s/ splitquery('/path?query') --> '/path', 'query'.iNs ^(.*)\?([^?]*)$i i ( t
_queryprogR# R RJ R RK ( R& R R ( ( s" /usr/local/lib/python2.5/urllib.pyR M s
c C s` t d j o d d k } | i d a n t i | } | o | i d d Sn | d f S( s) splittag('/path#tag') --> '/path', 'tag'.iNs ^(.*)#([^#]*)$i i ( t _tagprogR# R RJ R RK ( R& R R ( ( s" /usr/local/lib/python2.5/urllib.pyR
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c C s! | i d } | d | d f S( sk splitattr('/path;attr1=value1;attr2=value2;...') ->
'/path', ['attr1=value1', 'attr2=value2', ...].R i i ( R ( R& t words( ( s" /usr/local/lib/python2.5/urllib.pyR d s c C s` t d j o d d k } | i d a n t i | } | o | i d d Sn | d f S( s- splitvalue('attr=value') --> 'attr', 'value'.iNs ^([^=]*)=(.*)$i i ( t
_valueprogR# R RJ R RK ( R R R ( ( s" /usr/local/lib/python2.5/urllib.pyR k s
c C s? | d d j o$ | d d !o | d | d f Sn d | f S( s2 splitgophertype('/Xselector') --> 'X', 'selector'.i R i N( R# ( Rb ( ( s" /usr/local/lib/python2.5/urllib.pyR v s c c s) x" | ] } d | t | f Vq Wd S( s %02xN( t chr( t .0R ( ( s" /usr/local/lib/python2.5/urllib.pys <genexpr>| s i c c s) x" | ] } d | t | f Vq Wd S( s %02XN( RX ( RY R ( ( s" /usr/local/lib/python2.5/urllib.pys <genexpr>} s c C s | i d } x t d t | D] } | | } y t | d | d | | <Wq% t j
o d | | | <q% t j
o, t t | d d | d | | <q% Xq% Wd i | S( s" unquote('abc%20def') -> 'abc def'.t %i i i Rf ( R t xrangeRp t _hextochrt KeyErrort UnicodeDecodeErrort unichrRn R ( t st resR t item( ( s" /usr/local/lib/python2.5/urllib.pyR s
.c C s | i d d } t | S( s% unquote('%7e/abc+def') -> '~/abc def't +t ( RS R ( R` ( ( s" /usr/local/lib/python2.5/urllib.pyR s sA ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.-R c C s | t f } y t | } Wnr t j
of | t 7} h } xB t d D]4 } t | } | | j o | p d | | | <qH W| t | <n Xt | i | } d i | S( s quote('abc def') -> 'abc%20def'
Each part of a URL, e.g. the path info, the query, etc., has a
different set of reserved characters that must be quoted.
RFC 2396 Uniform Resource Identifiers (URI): Generic Syntax lists
the following reserved characters.
reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" |
"$" | ","
Each of these characters is reserved in some component of a URL,
but not necessarily in all of them.
By default, the quote function is intended for quoting the path
section of a URL. Thus, it will not encode '/'. This character
is reserved, but in typical usage the quote function is being
called on a path where the existing slash characters are used as
reserved characters.
i s %%%02XRf ( t always_safet _safemapsR] t rangeRX RN t __getitem__R ( R` R
t cachekeyt safe_mapR t cRa ( ( s" /usr/local/lib/python2.5/urllib.pyR s
&Rf c C sA d | j o' t | | d } | i d d Sn t | | S( s9 Quote the query fragment of a URL; replacing ' ' with '+'Rd Rc ( R RS ( R` R
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i c
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| S( sv Encode a sequence of two-element tuples or dictionary into a URL query string.
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sequence element is converted to a separate parameter.
If the query arg is a sequence of two-element tuples, the order of the
parameters in the output will match the order of parameters in the
input.
t itemsi s1 not a valid non-string sequence or mapping objectR RC RS t &( R8 Rl Rp R t tuplet TypeErrorRY RZ R R RI RA RD R (
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)c C s` h } xS t i i D]B \ } } | i } | o# | d d j o | | | d <q q W| S( s Return a dictionary of scheme -> proxy server URL mappings.
Scan the environment for variables named <scheme>_proxy;
this seems to be the standard convention. If you need a
different way, you can pass a proxies dictionary to the
[Fancy]URLopener constructor.
it _proxy( R> t environRl R ( R" Rc R ( ( s" /usr/local/lib/python2.5/urllib.pyt getproxies_environment s t darwinc
C s y d d k } Wn t j
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o h Sn Xh } d | j oD | d o9 y | d } Wn | i j
o q Xd | | d <n | S( s Return a dictionary of scheme -> proxy server URL mappings.
By convention the mac uses Internet Config to store
proxies. An HTTP proxy, for instance, is stored under
the HttpProxy key.
iNt UseHTTPProxyt
HTTPProxyHosts http://%sR} ( t icR t ICRX ( R| t configR" R ( ( s" /usr/local/lib/python2.5/urllib.pyt getproxies_internetconfig s c C s d S( Ni ( ( R@ ( ( s" /usr/local/lib/python2.5/urllib.pyR . s c C s t p t S( N( Rx R ( ( ( s" /usr/local/lib/python2.5/urllib.pyR 1 s c C sn h } y d d k } Wn t j
o | Sn Xy| i | i d } | i | d d } | o t | i | d d } d | j os x | i d D][ } | i d d \ } } d d k } | i d
| p d | | f } n | | | <q Wq@| d d
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o n X| S( sx Return a dictionary of scheme -> proxy server URL mappings.
Win32 uses the registry to store proxies.
iNs; Software\Microsoft\Windows\CurrentVersion\Internet Settingst ProxyEnablei t ProxyServerR R i s ^([^/:]+)://s %s://%si s http:R} s http://%ss ftp://%sR (
t _winregR t OpenKeyt HKEY_CURRENT_USERt QueryValueExR R R R t Closet WindowsErrorR Ro ( R" R t internetSettingst proxyEnablet proxyServert pt protocolt addressR ( ( s" /usr/local/lib/python2.5/urllib.pyt getproxies_registry5 s:
c C s t p t S( s Return a dictionary of scheme -> proxy server URL mappings.
Returns settings gathered from the environment, if specified,
or the registry.
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c C s d | | | f GHd S( Ns0 Block number: %d, Block size: %d, Total size: %d( ( R{ t blocksizet totalsize( ( s" /usr/local/lib/python2.5/urllib.pyR+ s c C s9 | p: d d d d d g } t t d o | i d qA n z x | D] } d G| Gd GHt | d t \ } } | GH| o6 d
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GHd Sqq qq W| o& | d j o t n t | n2 | p d GHn x | D] } t | i GqWd S( Nii t ths Use -h for helpi s -ts -hs& Usage: python urllib.py [-t] [url ...]s -t runs self-test;s' otherwise, contents of urls are printed( t getoptRY t argvRX R R R Ro ( R RY t optsRJ Rd t tt oR R& ( ( s" /usr/local/lib/python2.5/urllib.pyt main s4 #
t __main__(X R R RW R> R RY t urlparseR R t __all__R R Rc t macurl2pathR R t
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