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requests.utils
~~~~~~~~~~~~~~
This module provides utility functions that are used within Requests
that are also useful for external consumption.
i����Ni ( t __version__( t certs( t parse_http_list( t quotet urlparset bytest strt OrderedDictt unquotet is_py2t builtin_strt
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InvalidURLs .netrct _netrciP t httpi� t httpsc C s" t | d � r | j � } n | S( s/ Returns an internal sequence dictionary update.t items( t hasattrR ( t d( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt dict_to_sequence+ s c C s� t | d � r t | � St | d � r/ | j St | d � rx y | j � } Wn t j k
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netrc_patht ft loct rit hostR t login_i( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt get_netrc_authH s0
c C s[ t | d d � } | rW t | t � rW | d d k rW | d d k rW t j j | � Sd S( s0 Tries to guess the filename of the given object.t namei t <i����t >N( t getattrR( t
isinstanceR R R* t basename( t objR= ( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt guess_filenamev s %c C sD | d k r d St | t t t t f � r: t d � � n t | � S( s� Take an object and test to see if it can be represented as a
dictionary. Unless it can not be represented as such, return an
OrderedDict, e.g.,
::
>>> from_key_val_list([('key', 'val')])
OrderedDict([('key', 'val')])
>>> from_key_val_list('string')
ValueError: need more than 1 value to unpack
>>> from_key_val_list({'key': 'val'})
OrderedDict([('key', 'val')])
s+ cannot encode objects that are not 2-tuplesN( R( RA R R t boolt intt
ValueErrorR ( t value( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt from_key_val_list~ s
c C se | d k r d St | t t t t f � r: t d � � n t | t j � r[ | j � } n t
| � S( sz Take an object and test to see if it can be represented as a
dictionary. If it can be, return a list of tuples, e.g.,
::
>>> to_key_val_list([('key', 'val')])
[('key', 'val')]
>>> to_key_val_list({'key': 'val'})
[('key', 'val')]
>>> to_key_val_list('string')
ValueError: cannot encode objects that are not 2-tuples.
s+ cannot encode objects that are not 2-tuplesN( R( RA R R RE RF RG t collectionst MappingR t list( RH ( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt to_key_val_list� s
c C sh g } x[ t | � D]M } | d | d k o8 d k n rS t | d d !� } n | j | � q W| S( s� Parse lists as described by RFC 2068 Section 2.
In particular, parse comma-separated lists where the elements of
the list may include quoted-strings. A quoted-string could
contain a comma. A non-quoted string could have quotes in the
middle. Quotes are removed automatically after parsing.
It basically works like :func:`parse_set_header` just that items
may appear multiple times and case sensitivity is preserved.
The return value is a standard :class:`list`:
>>> parse_list_header('token, "quoted value"')
['token', 'quoted value']
To create a header from the :class:`list` again, use the
:func:`dump_header` function.
:param value: a string with a list header.
:return: :class:`list`
i i����t "( t _parse_list_headert unquote_header_valuet append( RH t resultt item( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt parse_list_header� s $c C s� i } x� t | � D]~ } d | k r5 d | | <q n | j d d � \ } } | d | d k ol d k n r� t | d d !� } n | | | <q W| S( sM Parse lists of key, value pairs as described by RFC 2068 Section 2 and
convert them into a python dict:
>>> d = parse_dict_header('foo="is a fish", bar="as well"')
>>> type(d) is dict
True
>>> sorted(d.items())
[('bar', 'as well'), ('foo', 'is a fish')]
If there is no value for a key it will be `None`:
>>> parse_dict_header('key_without_value')
{'key_without_value': None}
To create a header from the :class:`dict` again, use the
:func:`dump_header` function.
:param value: a string with a dict header.
:return: :class:`dict`
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$c C sq | rm | d | d k o% d k n rm | d d !} | sN | d d k rm | j d d � j d d � Sn | S( s� Unquotes a header value. (Reversal of :func:`quote_header_value`).
This does not use the real unquoting but what browsers are actually
using for quoting.
:param value: the header value to unquote.
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c C s+ i } x | D] } | j | | j <q
W| S( so Returns a key/value dictionary from a CookieJar.
:param cj: CookieJar object to extract cookies from.
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c C s t | � } | j | � | S( s� Returns a CookieJar from a key/value dictionary.
:param cj: CookieJar to insert cookies into.
:param cookie_dict: Dict of key/values to insert into CookieJar.
( R t update( RY RZ t cj2( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt add_dict_to_cookiejar s
c C sv t j d t � t j d d t j �} t j d d t j �} t j d � } | j | � | j | � | j | � S( sl Returns encodings from given content string.
:param content: bytestring to extract encodings from.
s� In requests 3.0, get_encodings_from_content will be removed. For more information, please see the discussion on issue #2266. (This warning should only appear once.)s! <meta.*?charset=["\']*(.+?)["\'>]t flagss+ <meta.*?content=["\']*;?charset=(.+?)["\'>]s$ ^<\?xml.*?encoding=["\']*(.+?)["\'>]( t warningst warnt DeprecationWarningt ret compilet It findall( t contentt
charset_ret pragma_ret xml_re( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt get_encodings_from_content" s c C s_ | j d � } | s d St j | � \ } } d | k rK | d j d � Sd | k r[ d Sd S( sm Returns encodings from given HTTP Header Dict.
:param headers: dictionary to extract encoding from.
s content-typet charsets '"t texts
ISO-8859-1N( t getR( t cgit parse_headert strip( t headerst content_typet params( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt get_encoding_from_headers6 s c c s� | j d k r) x | D] } | Vq Wd St j | j � d d � } x+ | D]# } | j | � } | rK | VqK qK W| j d d t �} | r� | Vn d S( s Stream decodes a iterator.Nt errorsRW t t final( t encodingR( t codecst getincrementaldecodert decodet True( t iteratort rRS t decodert chunkt rv( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt stream_decode_response_unicodeJ s
c c s= d } x0 | t | � k r8 | | | | !V| | 7} q Wd S( s Iterate over slices of a string.i N( R ( t stringt slice_lengtht pos( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt iter_slices\ s c C s� t j d t � g } t | j � } | rc y t | j | � SWqc t k
r_ | j | � qc Xn y t | j | d d �SWn t k
r� | j SXd S( s� Returns the requested content back in unicode.
:param r: Response object to get unicode content from.
Tried:
1. charset from content-type
2. fall back and replace all unicode characters
s� In requests 3.0, get_unicode_from_response will be removed. For more information, please see the discussion on issue #2266. (This warning should only appear once.)Rw RW N(
Ra Rb Rc Rv Rs R Rh t UnicodeErrorRQ t TypeError( R� t tried_encodingsRz ( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt get_unicode_from_responsed s
t4 ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzs 0123456789-._~c C s� | j d � } x� t d t | � � D]� } | | d d !} t | � d k r� | j � r� y t t | d � � } Wn! t k
r� t d | � � n X| t k r� | | | d | | <q� d | | | | <q% d | | | | <q% Wd j | � S( s� Un-escape any percent-escape sequences in a URI that are unreserved
characters. This leaves all reserved, illegal and non-ASCII bytes encoded.
t %i i i i s% Invalid percent-escape sequence: '%s'Rx (
R0 t rangeR t isalnumt chrRF RG R t UNRESERVED_SETt join( t urit partst it ht c( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt unquote_unreserved� s
c C sK d } d } y t t | � d | �SWn t k
rF t | d | �SXd S( s� Re-quote the given URI.
This function passes the given URI through an unquote/quote cycle to
ensure that it is fully and consistently quoted.
s !#$%&'()*+,/:;=?@[]~s !#$&'()*+,/:;=?@[]~t safeN( R R� R ( R� t safe_with_percentt safe_without_percent( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt requote_uri� s
c C s� t j d t j | � � d } | j d � \ } } t j d t j t t | � � � � d } t j d t j | � � d | @} | | @| | @k S( s�
This function allows you to check if on IP belongs to a network subnet
Example: returns True if ip = 192.168.1.1 and net = 192.168.1.0/24
returns False if ip = 192.168.1.1 and net = 192.168.100.0/24
s =Li t /( t structt unpackt sockett inet_atonR0 t dotted_netmaskRF ( t ipt nett ipaddrt netaddrt bitst netmaskt network( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt address_in_network� s
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Converts mask from /xx format to xxx.xxx.xxx.xxx
Example: if mask is 24 function returns 255.255.255.0
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Returns whether we should bypass proxies or not.
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c C s t | � r i St � Sd S( s% Return a dict of environment proxies.N( R� R ( R5 ( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt get_environ_proxies s s python-requestsc C s7 t j � } | d k r' t j � } n� | d k r� d t j j t j j t j j f } t j j d k r� d j | t j j g � } q� n< | d k r� t j � } n! | d k r� t j � } n d } y t j
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c C s� g } d } x� t j d | � D]� } y | j d d � \ } } Wn t k
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r� Pn X| j | � | | j | � <q� W| j | � q W| S( s� Return a dict of parsed link headers proxies.
i.e. Link: <http:/.../front.jpeg>; rel=front; type="image/jpeg",<http://.../back.jpeg>; rel=back;type="image/jpeg"
s '"s , *<t ;i Rx s <> '"R5 RU ( Rd R0 RG Rr RQ ( RH t linkst
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Sn d S( Ni s utf-32i s utf-8-sigi s utf-16i s utf-8s utf-16-bei s utf-16-les utf-32-bes utf-32-le( R{ t BOM_UTF32_LEt BOM32_BEt BOM_UTF8t BOM_UTF16_LEt BOM_UTF16_BER� t _nullt _null2t _null3R( ( t datat samplet nullcount( ( s2 /usr/lib/python2.7/site-packages/requests/utils.pyt guess_json_utfn s*
c C sS t | | � \ } } } } } } | s7 | | } } n t | | | | | | f � S( s� Given a URL that may or may not have a scheme, prepend the given scheme.
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rM d } n X| S( s_ Given a url with authentication components, extract them into a tuple of
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c C sI d } t | t � r | } n' t r6 | j | � } n | j | � } | S( s�
Given a string object, regardless of type, returns a representation of that
string in the native string type, encoding and decoding where necessary.
This assumes ASCII unless told otherwise.
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Given a url remove the fragment and the authentication part
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