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Sc r|Sd r{Se r}Sf rzg\pr{\qrzg! \- a Sr, GNef = f)ia
An extensible library for opening URLs using a variety of protocols
The simplest way to use this module is to call the urlopen function,
which accepts a string containing a URL or a Request object (described
below). It opens the URL and returns the results as file-like
object; the returned object has some extra methods described below.
The OpenerDirector manages a collection of Handler objects that do
all the actual work. Each Handler implements a particular protocol or
option. The OpenerDirector is a composite object that invokes the
Handlers needed to open the requested URL. For example, the
HTTPHandler performs HTTP GET and POST requests and deals with
non-error returns. The HTTPRedirectHandler automatically deals with
HTTP 301, 302, 303, 307, and 308 redirect errors, and the
HTTPDigestAuthHandler deals with digest authentication.
urlopen(url, data=None) -- Basic usage is the same as original
urllib. pass the url and optionally data to post to an HTTP URL, and
get a file-like object back. One difference is that you can also pass
a Request instance instead of URL. Raises a URLError (subclass of
OSError); for HTTP errors, raises an HTTPError, which can also be
treated as a valid response.
build_opener -- Function that creates a new OpenerDirector instance.
Will install the default handlers. Accepts one or more Handlers as
arguments, either instances or Handler classes that it will
instantiate. If one of the argument is a subclass of the default
handler, the argument will be installed instead of the default.
install_opener -- Installs a new opener as the default opener.
objects of interest:
OpenerDirector -- Sets up the User Agent as the Python-urllib client and manages
the Handler classes, while dealing with requests and responses.
Request -- An object that encapsulates the state of a request. The
state can be as simple as the URL. It can also include extra HTTP
headers, e.g. a User-Agent.
BaseHandler --
internals:
BaseHandler and parent
_call_chain conventions
Example usage:
import urllib.request
# set up authentication info
authinfo = urllib.request.HTTPBasicAuthHandler()
authinfo.add_password(realm='PDQ Application',
uri='https://mahler:8092/site-updates.py',
user='klem',
passwd='geheim$parole')
proxy_support = urllib.request.ProxyHandler({"http" : "http://ahad-haam:3128"})
# build a new opener that adds authentication and caching FTP handlers
opener = urllib.request.build_opener(proxy_support, authinfo,
urllib.request.CacheFTPHandler)
# install it
urllib.request.install_opener(opener)
f = urllib.request.urlopen('https://www.python.org/')
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addinfourl addclosehookTF)!RequestOpenerDirector BaseHandlerHTTPDefaultErrorHandlerHTTPRedirectHandlerHTTPCookieProcessor ProxyHandlerHTTPPasswordMgr HTTPPasswordMgrWithDefaultRealm HTTPPasswordMgrWithPriorAuthAbstractBasicAuthHandlerHTTPBasicAuthHandlerProxyBasicAuthHandlerAbstractDigestAuthHandlerHTTPDigestAuthHandlerProxyDigestAuthHandler HTTPHandler FileHandler
FTPHandlerCacheFTPHandler DataHandlerUnknownHandlerHTTPErrorProcessorurlopeninstall_opener build_opener pathname2url url2pathname
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[ 5 =qnO[ nUR XU5 $ )a Open the URL url, which can be either a string or a Request object.
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details.
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header in its HTTP requests.
The optional *timeout* parameter specifies a timeout in seconds for
blocking operations like the connection attempt (if not specified, the
global default timeout setting will be used). This only works for HTTP,
HTTPS and FTP connections.
If *context* is specified, it must be a ssl.SSLContext instance describing
the various SSL options. See HTTPSConnection for more details.
This function always returns an object which can work as a
context manager and has the properties url, headers, and status.
See urllib.response.addinfourl for more detail on these properties.
For HTTP and HTTPS URLs, this function returns a http.client.HTTPResponse
object slightly modified. In addition to the three new methods above, the
msg attribute contains the same information as the reason attribute ---
the reason phrase returned by the server --- instead of the response
headers as it is specified in the documentation for HTTPResponse.
For FTP, file, and data URLs and requests explicitly handled by legacy
URLopener and FancyURLopener classes, this function returns a
urllib.response.addinfourl object.
Note that None may be returned if no handler handles the request (though
the default installed global OpenerDirector uses UnknownHandler to ensure
this never happens).
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environment variable like http_proxy is set), ProxyHandler is default
installed and makes sure the requests are handled through the proxy.
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Retrieve a URL into a temporary location on disk.
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the temporary file location. The reporthook argument should be
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total file size of the URL target. The data argument should be
valid URL encoded data.
If a filename is passed and the URL points to a local resource,
the result is a copy from local file to new file.
Returns a tuple containing the path to the newly created
data file as well as the resulting HTTPMessage object.
fileNwbF)delete r content-lengthContent-Length 1retrieval incomplete: got only %i out of %i bytes)r
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rG retry_https_basic_auth%FancyURLopener.retry_https_basic_auth s #C IIcNQ Bx++D; "4b 1 "6 3T;d"X- <99V$ $99V* *rH c US- UR 5 - nX@R ; a$ U( a U R U OU R U $ U R X5 u pVU( d U( a XV4U R U' XV4$ )Nrx )rz r prompt_user_passwd)r r| r r r r r s rG r FancyURLopener.get_user_passwd% sl ckDJJL( // !OOC(s++..t; 64.4??3/|rH c SSK n [ SU< SU< S35 nUR SU< SU< SU< S35 nXE4$ ! [ a
[ 5 gf = f) z#Override this in a GUI environment!r NzEnter username for z at z: zEnter password for z in r )getpassinputKeyboardInterruptprint)r r| r r r r s rG r !FancyURLopener.prompt_user_passwd0 sR E4HID __ud&$ %F< G s 4; AA)r r r rJ )NF)r )r r r r rF r r rp r rr rs rt ru r
r r r r r r r r r rH rG r: r: b sm I ?$!8LLNN FJ82 FJ82+$+$ + +
rH r: c H [ c [ R " S5 q [ $ )z8Return the IP address of the magic hostname 'localhost'.r )
_localhostr# r r rH rG r r @ s ))+6
rH c [ c< [ [ R " [ R " 5 5 S 5 q [ $ [ $ ! [ R
a* [ [ R " S5 S 5 q [ $ f = f)z,Return the IP addresses of the current host.r; r ) _thishostr r# r r r r rH rG r r H sw G f 5 5f6H6H6J KA NOI 9 G f 5 5k B1 EFI Gs 5A
6BBc < [ c SSKn U R q [ $ )z1Return the set of errors raised by the FTP class.Nr )
_ftperrorsr r )r s rG r r S s &&
rH c H [ c [ R " S5 q [ $ )z%Return an empty email Message object.rt )
_noheadersr r r rH rG noheadersr \ s ..r2
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r r r| r r rD refcountr initr )r r r r| r r rD r s rG r ftpwrapper.__init__i sM
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real_closer s rG r ftpwrapper.close s$ ==A OO rH c U R 5 U =R S- sl U R S:: a# U R ( d U R 5 g g g )NrS r )r r r r r s rG r ftpwrapper.file_close s@
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a Return a dictionary of scheme -> proxy server URL mappings.
Scan the environment for variables named _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.
r ir Nry REQUEST_METHODr _proxy)rX environrb rz r_ r )r environmentr] r
proxy_names rG getproxies_environmentr s GK
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S5 nUR 5 nX5:X d X:X a gSU- nUR U5 ( d U R U5 ( d M| g g! [ a gf = f)zTest if proxies should not be used for a particular host.
Checks the proxy dict for the value of no_proxy, which should
be a list of comma separated DNS suffixes, or '*' for all hosts.
noF*Tr@ .)r rA rz r r r lstripr )r| r no_proxyhostonlyr r] s rG proxy_bypass_environmentr$ s (*4= 3 ::.ip2num%
sm S!Se_% u:?\)2A.EaB58r>2eAh!mDuQxOOrH r exclude_simpleTN
exceptionsr z(\d+(?:\.\d+)*)(/\d+)?rS r; r- F) r' ipaddressr( r) r r` r r r groupcount)
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rG _proxy_bypass_macosx_sysconfr8
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s D D D c SSK J n [ U 5 u pUR S5 nU H2 nUR 5 nUS:X a
SU ; a gM# U" X5 ( d M2 g g)zReturn True if the host should bypass the proxy server.
The proxy override list is obtained from the Windows
Internet settings proxy override registry value.
An example of a proxy override value is:
"www.example.com;*.example.net; 192.168.0.1"
r r& r zr TF)r' r r r )r| overrider' r proxy_overrider s rG _proxy_bypass_winreg_overrider< T
s` GD ^^C(N zz| 9 $
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rH darwin)_get_proxy_settings _get_proxiesc , [ 5 n[ X5 $ rJ )r> r8 )r| r5 s rG proxy_bypass_macosx_sysconfrA o
s ,.+DAArH c [ 5 $ )zReturn a dictionary of scheme -> proxy server URL mappings.
This function uses the MacOSX framework SystemConfiguration
to fetch the proxy information.
)r? r rH rG getproxies_macosx_sysconfrC s
s ~ rH c P [ 5 nU( a [ X5 $ [ U 5 $ )zReturn True, if host should be bypassed.
Checks proxy settings gathered from the environment, if specified,
or from the MacOSX framework SystemConfiguration.
)r r$ rA r| r s rG r r }
s% )* +D: :.t4 4rH c 8 [ 5 =( d
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5 nU R S5 =( d UU S' U R S5 =( d UU S' UR 5 U $ ! [ a U s $ f = f! [ [ [ 4 a U $ f = f)zhReturn a dictionary of scheme -> proxy server URL mappings.
Win32 uses the registry to store proxies.
r N;Software\Microsoft\Windows\CurrentVersion\Internet Settings ProxyEnable ProxyServerr r zhttp={0};https={0};ftp={0}rS z
(?:[^/:]+)://)r r r` r sockszsocks://z ^socks://z socks4://r r )winreg ImportErrorOpenKeyHKEY_CURRENT_USER QueryValueExr r r r r r ry Closerq r r )r rL internetSettings proxyEnable proxyServerpr addresss rG getproxies_registryrW
s " %~~f.F.FN P --.>/<>>?AK !&"5"56F7D#FFG#I J k)c.D">"E"Ek"RK$**3/A()Q%H 88OW==#'??&/'&9G % 0&07&:G(/H% 0 ;;w'' ff\;@P QG&-kk&&9&DWGFO'.{{7';'FwGG$ " " $ M N B Y/
s# E EE/ E,+E,/FFc 8 [ 5 =( d
[ 5 $ )zReturn a dictionary of scheme -> proxy server URL mappings.
Returns settings gathered from the environment, if specified,
or the registry.
)r rW r rH rG r6 r6
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c P [ 5 nU( a [ X5 $ [ U 5 $ )zReturn True, if host should be bypassed.
Checks proxy settings gathered from the environment, if specified,
or the registry.
)r r$ r\ rE s rG r r
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