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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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d Z d Z RS( s; Class used by open_ftp() for cache of open FTP connections.c C sV | | _ | | _ | | _ | | _ | | _ | | _ d | _ | | _ | j d S( Ni ( R R Rf R R t timeoutt refcountt keepalivet init( R6 R R Rf R R R t
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real_close( R6 ( ( s /usr/lib/python2.7/urllib.pyRH s c C sC | j | j d 8_ | j d k r? | j r? | j n d S( Ni i ( R* R R R9 ( R6 ( ( s /usr/lib/python2.7/urllib.pyR1 s
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R8 R9 R R\ t _GLOBAL_DEFAULT_TIMEOUTR R4 R R R* RH R1 R9 ( ( ( s /usr/lib/python2.7/urllib.pyR _ 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 | | _ | j j | _ | j j | _ t | j d rK | j j | _ n t | j d ro | j j | _ n d | _ t | j d r | j j | _ t | j d r | j j | _ q n d S( Nt readlinest filenoc S s d S( N( R% ( ( ( s /usr/lib/python2.7/urllib.pyt <lambda> s t __iter__t next( Rb Rs t readlineR= R< R= R? R@ ( R6 Rb ( ( s /usr/lib/python2.7/urllib.pyR4 s c C s d | j j t | | j f S( Ns <%s at %r whose fp = %r>( t __class__R8 t idRb ( R6 ( ( s /usr/lib/python2.7/urllib.pyt __repr__ s c C sJ d | _ d | _ d | _ d | _ | j r= | j j n d | _ d S( N( R% Rs RA R< R= Rb RH ( R6 ( ( s /usr/lib/python2.7/urllib.pyRH s ( R8 R9 R R4 RD RH ( ( ( s /usr/lib/python2.7/urllib.pyR; 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 j | | | | _ | | _ d S( N( R; R4 t closehookt hookargs( R6 Rb RE RF ( ( s /usr/lib/python2.7/urllib.pyR4 s c C s? | j r. | j | j d | _ d | _ n t j | d S( N( RE RF R% R; RH ( R6 ( ( s /usr/lib/python2.7/urllib.pyRH s
( R8 R9 R R4 RH ( ( ( s /usr/lib/python2.7/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 j | | | | _ d S( N( R; R4 Ra ( R6 Rb Ra ( ( s /usr/lib/python2.7/urllib.pyR4 s c C s | j S( N( Ra ( R6 ( ( s /usr/lib/python2.7/urllib.pyRl s ( R8 R9 R R4 Rl ( ( ( s /usr/lib/python2.7/urllib.pyRG s RV c B s5 e Z d Z d 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 j | | | | _ | | _ | | _ d S( N( R; R4 Ra R( t code( R6 Rb Ra R( RH ( ( s /usr/lib/python2.7/urllib.pyR4 s c C s | j S( N( Ra ( R6 ( ( s /usr/lib/python2.7/urllib.pyRl s c C s | j S( N( RH ( R6 ( ( s /usr/lib/python2.7/urllib.pyt getcode s c C s | j S( N( R( ( R6 ( ( s /usr/lib/python2.7/urllib.pyt geturl s N( R8 R9 R R% R4 Rl RI RJ ( ( ( s /usr/lib/python2.7/urllib.pyRV s
c C s d S( Ni ( ( t x( ( s /usr/lib/python2.7/urllib.pyt _is_unicode s c C s
t | t S( N( R t unicode( RK ( ( s /usr/lib/python2.7/urllib.pyRL s c C sT t | rP y | j d } WqP t k
rL t d t | d qP Xn | S( s toBytes(u"URL") --> 'URL'.t ASCIIs URL s contains non-ASCII characters( RL t encodet UnicodeErrort repr( R( ( ( s /usr/lib/python2.7/urllib.pyRU s
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 <it >i s URL:( R ( R( ( ( s /usr/lib/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'.iNs
^([^/:]+):i ( t _typeprogR% R t compileR t groupR Rt ( R( R R R ( ( s /usr/lib/python2.7/urllib.pyR 4 s c C s t d k r* d d l } | j d a n t j | } | r | j d } | j d } | r | j d r d | } n | | f Sd | f S( s; splithost('//host[:port]/path') --> 'host[:port]', '/path'.iNs ^//([^/?]*)(.*)$i i R ( t _hostprogR% R RU R RV R ( R( R R t host_portRn ( ( s /usr/lib/python2.7/urllib.pyR B s
c C sY t d k r* d d l } | j d a n t j | } | rO | j d d Sd | f S( sJ splituser('user[:passwd]@host[:port]') --> 'user[:passwd]', 'host[:port]'.iNs ^(.*)@(.*)$i i ( t _userprogR% R RU R RV ( Rf R R ( ( s /usr/lib/python2.7/urllib.pyR S 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'.iNs ^([^:]*):(.*)$i i ( t _passwdprogR% R RU t SR RV ( R R R ( ( s /usr/lib/python2.7/urllib.pyR _ s c C sn t d k r* d d l } | j d a n t j | } | rd | j \ } } | rd | | f Sn | d f S( s* splitport('host:port') --> 'host', 'port'.iNs ^(.*):([0-9]*)$( t _portprogR% R RU R R ( Rf R R R ( ( s /usr/lib/python2.7/urllib.pyR l s
c C s t d k r* d d l } | j d a n t j | } | r | j d d \ } } | r y t | } Wn t k
r 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.
Return numerical port if a valid number are found after ':'.
Return None if ':' but not a valid number.iNs ^(.*):(.*)$i i ( t
_nportprogR% R RU R RV Rr R ( Rf t defportR R R t nport( ( s /usr/lib/python2.7/urllib.pyR { s
c C sY t d k r* d d l } | j d a n t j | } | rO | j d d S| d f S( s/ splitquery('/path?query') --> '/path', 'query'.iNs ^(.*)\?([^?]*)$i i ( t
_queryprogR% R RU R RV ( R( R R ( ( s /usr/lib/python2.7/urllib.pyR 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) splittag('/path#tag') --> '/path', 'tag'.iNs ^(.*)#([^#]*)$i i ( t _tagprogR% R RU R RV ( R( R R ( ( s /usr/lib/python2.7/urllib.pyR
s c C s! | j d } | d | d f S( sk splitattr('/path;attr1=value1;attr2=value2;...') ->
'/path', ['attr1=value1', 'attr2=value2', ...].R i i ( R ( R( t words( ( s /usr/lib/python2.7/urllib.pyR s c C sY t d k r* d d l } | j d a n t j | } | rO | j d d S| d f S( s- splitvalue('attr=value') --> 'attr', 'value'.iNs ^([^=]*)=(.*)$i i ( t
_valueprogR% R RU R RV ( R R R ( ( s /usr/lib/python2.7/urllib.pyR s t 0123456789ABCDEFabcdefc c s? | ]5 } t D]( } | | t t | | d f Vq
q d S( i N( t _hexdigt chrRr ( t .0R t b( ( s /usr/lib/python2.7/urllib.pys <genexpr> s s ([ -]+)c C sO t | r d | k r | St j | } | d g } | j } xU t d t | d D]; } | t t | | j d | | | d qZ Wd j | S| j d } t | d k r | S| d g } | j } x^ | d D]R } y$ | t
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r=| d | | q Xq Wd j | S( s" unquote('abc%20def') -> 'abc def'.t %i i i t latin1Rk ( RL t _asciireR RL t rangeRt R R t decodeR t _hextochrt KeyError( t st bitst resRL R t item( ( s /usr/lib/python2.7/urllib.pyR s.
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c C s | j d d } t | S( s% unquote('%7e/abc+def') -> '~/abc def't +t ( RX R ( Rp ( ( s /usr/lib/python2.7/urllib.pyR s sA ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.-i i s %{:02X}R c C s | s% | d k r! t d n | S| t f } y t | \ } } Wnf t k
r t j } | j g | D] } | | f ^ qn | j } t | } | | f t | <n X| j | s | Sd j
t | | 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.
s None object cannot be quotedRk N( R% t TypeErrort always_safeR/ Ro t _safe_mapt copyt updatet __getitem__t rstripR t map( Rp RO t cachekeyt quotert safe_mapt c( ( s /usr/lib/python2.7/urllib.pyR s
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Rk c C s< d | k r/ t | | d } | j d d St | | S( s9 Quote the query fragment of a URL; replacing ' ' with '+'Ru Rt ( R RX ( Rp RO ( ( s /usr/lib/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
r t j \ } } } t d | n Xg } | s xc| D]E \ } } t t | } t t | } | j
| d | q Wnx| D]\ } } t t | } t | t r7t | } | j
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rt t | } | j
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| S( sv Encode a sequence of two-element tuples or dictionary into a URL query string.
If any values in the query arg are sequences and doseq is true, each
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 RN RX t &( R= R Rt R t tupleRv R^ R_ R R RL RL RO R ( t queryt doseqt tyt vat tbt lR R t elt( ( s /usr/lib/python2.7/urllib.pyR
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)c C s] i } xP t j j D]? \ } } | j } | r | d d k r | | | 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( RC t environR R ( R" Rh R ( ( s /usr/lib/python2.7/urllib.pyt getproxies_environmentZ 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.
Checks the environment for a variable named no_proxy, which should
be a list of DNS suffixes separated by commas, or '*' for all hosts.
t no_proxyRk t NO_PROXYt *i R i ( RC R R? R R R t endswith( Rf R t hostonlyR Rd t
no_proxy_listRh ( ( s /usr/lib/python2.7/urllib.pyt proxy_bypass_environmentj s * (
$t darwin( t _get_proxy_settingst _get_proxiesc
C s d d l } d d l } d d l m } t | \ } } d } t } d | k ri | d ri t Sn d } x'| j d d
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Return True iff this host shouldn't be accessed using a proxy
This function uses the MacOSX framework SystemConfiguration
to fetch the proxy information.
iN( t fnmatchc S sy | j d } t t | } t | d k rM | d d d d g d } n | d d >| d d >B| d d >B| d BS(
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exceptionss (\d+(?:\.\d+)*)(/\d+)?i i i i ( ( R R\ R R R R R% R? R R R] RV t countRr R8 (
Rf R R\ R R R R t proxy_settingst hostIPR t mt baset mask( ( s /usr/lib/python2.7/urllib.pyt proxy_bypass_macosx_sysconf s@
#
c C s t S( s Return a dictionary of scheme -> proxy server URL mappings.
This function uses the MacOSX framework SystemConfiguration
to fetch the proxy information.
( R ( ( ( s /usr/lib/python2.7/urllib.pyt getproxies_macosx_sysconf s c C s! t r t | St | Sd S( N( R R R ( Rf ( ( s /usr/lib/python2.7/urllib.pyR s
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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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k r| | d <qAd | | d <d | | d <d | | d <n | j Wn t
t t f k
rhn 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
https://%sR s ftp://%sR# (
t _winregR t OpenKeyt HKEY_CURRENT_USERt QueryValueExR R R R t Closet WindowsErrorR Rv ( R" R t internetSettingst proxyEnablet proxyServert pt protocolt addressR ( ( s /usr/lib/python2.7/urllib.pyt getproxies_registry 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.
( R R ( ( ( s /usr/lib/python2.7/urllib.pyR s c C s y d d l } d d l } Wn t k
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ProxyOverrideR s <local>R i s \.R s .*t ?( R R R R R R R R R R\ R RL R] t getfqdnR RX R R ( Rf R R R R t
proxyOverridet rawHostR t addrt fqdnt testt val( ( s /usr/lib/python2.7/urllib.pyt proxy_bypass_registry sT
c C s! t r t | St | Sd S( s Return a dictionary of scheme -> proxy server URL mappings.
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or the registry.
N( R R R ( Rf ( ( s /usr/lib/python2.7/urllib.pyR : s
c C s d } x$ t d D] } | t | } q W| d } t j } t | } t | } t j } | | k r{ d GHn t | GHt | GHt | GHt | | d Gd GHd S( NRk i i s Wrong!i t sec( Rl Rf R R R RQ t round( Rp R t t0t qst uqst t1( ( s /usr/lib/python2.7/urllib.pyt test1L s
c C s d | | | f GHd S( Ns0 Block number: %d, Block size: %d, Total size: %d( ( R t blocksizet totalsize( ( s /usr/lib/python2.7/urllib.pyR- \ s (h R t stringR\ RC R R^ R R t urlparseR R t __all__R R Rh t
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rourl2pathR% R& R R R t sslR8 R R R3 R2 R1 R R R R R R R R R R R R; R/ RG RV RM t NameErrorRL RU R RT R RW R RY R RZ R R\ R R] R R` R Ra R
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