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requests.utils
~~~~~~~~~~~~~~
This module provides utility functions that are used within Requests
that are also useful for external consumption.
i����N( t OrderedDicti ( t __version__( t certs( t to_native_string( t parse_http_list( t quotet urlparset bytest strt unquotet
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c C s! t � r t | � St | � Sd S( s� Return True, if the host should be bypassed.
Checks proxy settings gathered from the environment, if specified,
or the registry.
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c C s" t | d � r | j � } n | S( s/ Returns an internal sequence dictionary update.t items( t hasattrR8 ( t d( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt dict_to_sequencec s c C s� d } d } t | d � r* t | � } n� t | d � rE | j } nm t | d � r� y | j � } Wn t j k
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Ni t __len__t lent filenot bs% Requests has determined the content-length for this request using the binary size of the file: however, the file has been opened in text mode (i.e. without the 'b' flag in the mode). This may lead to an incorrect content-length. In Requests 3.0, support will be removed for files in text mode.t tellt seeki ( t NoneR9 R= R> t iot UnsupportedOperationt ost fstatt st_sizet modet warningst warnR R@ R+ t IOErrorRA t max( t ot total_lengtht current_positionR> ( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt super_lenl s@
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s; Returns the Requests tuple auth for a given url from netrc.i����( t netrct NetrcParseErrors ~/{}Nt :t asciii i i ( RQ RR RB t NETRC_FILESRE t patht
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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 getattrRB R[ R
RE RV t basename( t objRi ( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt guess_filename� s %c C s t j j | � r | St j j | � \ } } xJ | rz t j j | � rz t j j | � \ } } d j | | g � } q1 Wt j | � s� | St j | � } | | j � k r� | St j
� } t j j | | j d � � } t j j | � s| j | d | �} n | S( s� Replace nonexistent paths that look like they refer to a member of a zip
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gettempdirt extract( RV t archivet membert prefixt zip_filet tmpt extracted_path( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt extract_zipped_paths� 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')
Traceback (most recent call last):
...
ValueError: cannot encode objects that are not 2-tuples
>>> from_key_val_list({'key': 'val'})
OrderedDict([('key', 'val')])
:rtype: OrderedDict
s+ cannot encode objects that are not 2-tuplesN( RB R[ R R t boolR) t
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c C sb | d k r d St | t t t t f � r: t d � � n t | t � rX | j � } n t | � S( s� 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')
Traceback (most recent call last):
...
ValueError: cannot encode objects that are not 2-tuples
:rtype: list
s+ cannot encode objects that are not 2-tuplesN(
RB R[ R R R� R) R� R R8 t list( R� ( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/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`
:rtype: list
i i����t "( t _parse_list_headert unquote_header_valuet append( R� t resultt item( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/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( s^ 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`
:rtype: dict
t =i i����R� N( R� RB R, R� ( R� R� R� Ri ( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt parse_dict_header] s
$c C sq | rm | d | d k o% d k n rm | d d !} | sN | d d k rm | j d d � j d d � Sn | S( s� Unquotes a header value. (Reversal of :func:`quote_header_value`).
This does not use the real unquoting but what browsers are actually
using for quoting.
:param value: the header value to unquote.
:rtype: str
i i����R� i i s \\s \s \"( R. ( R� t is_filename( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyR� � s
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c C s+ i } x | D] } | j | | j <q
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:param cj: CookieJar object to extract cookies from.
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:rtype: CookieJar
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s� In requests 3.0, get_encodings_from_content will be removed. For more information, please see the discussion on issue #2266. (This warning should only appear once.)s! <meta.*?charset=["\']*(.+?)["\'>]t flagss+ <meta.*?content=["\']*;?charset=(.+?)["\'>]s$ ^<\?xml.*?encoding=["\']*(.+?)["\'>]( RI RJ t DeprecationWarningR/ t compileR1 t findall( t contentt
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C s� | j d � } | d j � | d } } i } d } x� | D]� } | j � } | r= | t } } | j d � } | d k r� | | j | � } | | d j | � } n | | | j � <q= q= W| | f S( s� Returns content type and parameters from given header
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c C s\ | j d � } | s d St | � \ } } d | k rH | d j d � Sd | k rX d Sd S( s} Returns encodings from given HTTP Header Dict.
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ISO-8859-1N( t getRB R� R� ( t headersR� R� ( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt get_encoding_from_headers� 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 errorsR. t t final( t encodingRB t codecst getincrementaldecoderR\ R- ( t iteratort rR� t decodert chunkt rv( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt stream_decode_response_unicode� s
c c sd d } | d k s | d k r- t | � } n x0 | t | � k r_ | | | | !V| | 7} q0 Wd S( s Iterate over slices of a string.i N( RB R= ( t stringt slice_lengtht pos( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/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
:rtype: str
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.)R� R. N(
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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.
:rtype: str
t %i i i i s% Invalid percent-escape sequence: '%s'R� (
R, t rangeR= t isalnumt chrR) R� R t UNRESERVED_SETRq ( t urit partst it ht c( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/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.
:rtype: str
s !#$%&'()*+,/:;=?@[]~s !#$&'()*+,/:;=?@[]~t safeN( R R� R ( R� t safe_with_percentt safe_without_percent( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt requote_uriR 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 an 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
:rtype: bool
s =Li Rp ( t structt unpackt sockett inet_atonR, t dotted_netmaskR) ( t ipt nett ipaddrt netaddrt bitst netmaskt network( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt address_in_networkh s
+#c C s/ d d d | >d A} t j t j d | � � S( s� Converts mask from /xx format to xxx.xxx.xxx.xxx
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Returns whether we should bypass proxies or not.
:rtype: bool
c S s( t j j | � p' t j j | j � � S( N( RE R� R� t upper( t k( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt <lambda>� s t no_proxyc s s | ] } | r | Vq d S( N( ( t .0R2 ( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pys <genexpr>� s t R� t ,s :{}N( RB R t hostnameR- R. R, R� R� R� t portRX t endswithR� R R� R� t gaierrorR& ( R` R� t get_proxyt no_proxy_argt parsedt proxy_ipt host_with_portR2 t bypass( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt should_bypass_proxies� s< %
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Return a dict of environment proxies.
:rtype: dict
R� N( R R
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:param url: The url being for the request
:param proxies: A dictionary of schemes or schemes and hosts to proxy URLs
t alls ://s all://N( R R� RB R� t scheme( R` t proxiest urlpartst
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Return a string representing the default user agent.
:rtype: str
s %s/%s( R ( Ri ( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt default_user_agent s c C s2 t i t � d 6d j d
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rz | d } } n Xi | j d � d 6} xa | j d � D]P } y | j d � \ } } Wn t k
r� Pn X| j | � | | j | � <q� W| j | � q8 W| S( s� Return a list of parsed link headers proxies.
i.e. Link: <http:/.../front.jpeg>; rel=front; type="image/jpeg",<http://.../back.jpeg>; rel=back;type="image/jpeg"
:rtype: list
s '"s , *<R i R� s <> '"R` R� ( R� R/ R, R� R� ( R� t linkst
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t RT i i c C s | d } | t j t j f k r& d S| d t j k r= d S| d t j t j f k r] d S| j t � } | d k r| d S| d k r� | d d d � t k r� d
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i s utf-32i s utf-8-sigi s utf-16i s utf-8Ns utf-16-bei s utf-16-les utf-32-bes utf-32-le( R� t BOM_UTF32_LEt BOM_UTF32_BEt BOM_UTF8t BOM_UTF16_LEt BOM_UTF16_BER� t _nullt _null2t _null3RB ( t datat samplet nullcount( ( sK /opt/alt/python37/lib/python3.7/site-packages/pip/_vendor/requests/utils.pyt guess_json_utf^ 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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:rtype: str
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rM d } n X| S( s{ Given a url with authentication components, extract them into a tuple of
username,password.
:rtype: (str,str)
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