python (3.12.0)
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dPz Z:e3j e:e; \ Z8ZBeBD ]a \ ZCZD e eDdQ j dRdP d ZF e eDdS ZG e.eDd ZH e=dTj eC e>eFdU e>eGdV eH c e3j yy# e $ r dZY w xY w)Ya An NNTP client class based on:
- RFC 977: Network News Transfer Protocol
- RFC 2980: Common NNTP Extensions
- RFC 3977: Network News Transfer Protocol (version 2)
Example:
>>> from nntplib import NNTP
>>> s = NNTP('news')
>>> resp, count, first, last, name = s.group('comp.lang.python')
>>> print('Group', name, 'has', count, 'articles, range', first, 'to', last)
Group comp.lang.python has 51 articles, range 5770 to 5821
>>> resp, subs = s.xhdr('subject', '{0}-{1}'.format(first, last))
>>> resp = s.quit()
>>>
Here 'resp' is the server response line.
Error responses are turned into exceptions.
To post an article from a file:
>>> f = open(filename, 'rb') # file containing article, including header
>>> resp = s.post(f)
>>>
For descriptions of all methods, read the comments in the code below.
Note that all arguments and return values representing article numbers
are strings, not numbers, since they are rarely used for calculations.
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decode_header)_GLOBAL_DEFAULT_TIMEOUT)NNTP NNTPErrorNNTPReplyErrorNNTPTemporaryErrorNNTPPermanentErrorNNTPProtocolError
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| |k7 r t d |S )zParse a list of string representing the response to LIST OVERVIEW.FMT
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}t j |||||| S ) zParse a pair of (date, time) strings, and return a datetime object.
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in the format required by the NEWNEWS and NEWGROUPS commands. If a
date object is passed, the time is assumed to be midnight (00h00).
The returned representation depends on the legacy flag:
* if legacy is False (the default):
date has the YYYYMMDD format and time the HHMMSS format
* if legacy is True:
date has the YYMMDD format and time the HHMMSS format.
RFC 3977 compliant servers should understand both formats; therefore,
legacy is only needed when talking to old servers.
000000z({0.hour:02d}{0.minute:02d}{0.second:02d}rw z {0:02d}{1.month:02d}{1.day:02d}z {0:04d}{1.month:02d}{1.day:02d})rG rx formatr~ )dtlegacyrz yry s r _unparse_datetimer s| b(++ ,=DDRH
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G4;;ArB X 5;;ArB X r c T |t j }|j | | S )zWrap a socket in SSL/TLS. Arguments:
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| |s|r| j ||| yy# | j r| j j | j j xY w)a, Initialize an instance. Arguments:
- host: hostname to connect to
- port: port to connect to (default the standard NNTP port)
- user: username to authenticate with
- password: password to use with username
- readermode: if true, send 'mode reader' command after
connecting.
- usenetrc: allow loading username and password from ~/.netrc file
if not specified explicitly
- timeout: timeout (in seconds) used for socket connections
readermode is sometimes necessary if you are connecting to an
NNTP server on the local machine and intend to call
reader-specific commands, such as `group'. If you get
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readermode.
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|s t d t j d| | j | j t j | j | j f| S )Nz0Non-blocking socket (timeout=0) is not supportedznntplib.connect)
ValueErrorsysauditr r socketcreate_connection)r r s r r zNNTP._create_socket sQ w OP P #T499dii@''DII(>HHr c p | j r t dt | j | j S )zGet the welcome message from the server
(this is read and squirreled away by __init__()).
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if it 201, posting is not allowed.z *welcome*)r printreprr r s r
getwelcomezNNTP.getwelcome s' >>5d4<<.@A||r c n | j wd| _ d| _ | j \ }}|| _ d|v r!t t t |d | _ d|v rdj |d | _ | j S | j S # t t f$ r i | _ Y | j S w xY w)zGet the server capabilities, as read by __init__().
If the CAPABILITIES command is not supported, an empty dict is
returned.NrQ VERSIONIMPLEMENTATION )
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s B B43B4c || _ y)zSet the debugging level. Argument 'level' means:
0: no debugging output (default)
1: print commands and responses but not body text etc.
2: also print raw lines read and sent before stripping CR/LFN)r )r levels r set_debuglevelzNNTP.set_debuglevel s r c t j d| | |t z }| j dkD rt dt | | j j | | j j y)zfInternal: send one line to the server, appending CRLF.
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NNTP._putline sU #T40e| >>A uWd4j 9 r c | j rt dt | |j | j | j
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dt | |st |r#|dd t k( r|dd }|S |dd t v r|dd }|S )zInternal: return one line from the server, stripping _CRLF.
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line too longz*get*ru N)
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strip_crlfrY s r _getlinez
NNTP._getline s yy!!(A+. t9x 0 0 >>A '4: &8^ BCyE!CRy bce#CRy r c | j }| j rt dt | |j | j
| j }|dd }|dk( r t | |dk( r t | |dvr t | |S )zInternal: get a response from the server.
Raise various errors if the response indicates an error.
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NNTP._getresp s }} >>54:6{{4==$++6 !H 8$T* * 8$T* * E>#D) ) r c d} t |t t f rt |d x}}| j }|dd t
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| g }|Jdt z df} | j d }||v rni|j d r|dd }|j | >d} | j }||k( rn(|j d r|dd }|j | >|r|j ||fS # |r|j w w xY w) aP Internal: get a response plus following text from the server.
Raise various errors if the response indicates an error.
Returns a (response, lines) tuple where `response` is a unicode
string and `lines` is a list of bytes objects.
If `file` is a file-like object, it must be open in binary mode.
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"U{ " s CC3 3Dc D | j | | j S )zWInternal: send a command and get the response.
Same return value as _getresp().)r r r s r _shortcmdzNNTP._shortcmd s
T}} r c F | j | | j | S )zoInternal: send a command and get the response plus following text.
Same return value as _getlongresp().)r r )r rY r s r _longcmdz
NNTP._longcmd! s!
T &&r c | j | | j | \ }}||D cg c]( }|j | j | j * c}fS c c}w )zInternal: send a command and get the response plus following text.
Same as _longcmd() and _getlongresp(), except that the returned `lines`
are unicode strings rather than bytes objects.
)r r rI r r )r rY r r lists r _longcmdstringzNNTP._longcmdstring' s_
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d"&( kk$--= ( ( ( (s -A c | j S # t $ r Y nw xY w | j d \ }}t | }n# t $ r t
dd }Y nw xY w|| _ |S )zqInternal: get the overview format. Queries the server if not
already done, else returns the cached value.zLIST OVERVIEW.FMTN)_cachedoverviewfmtAttributeErrorr r^ r rV )r r r9 rX s r _getoverviewfmtzNNTP._getoverviewfmt1 su ** * - --.ABKD%
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_grouplistzNNTP._grouplistB s! 5:;T 4::<(;;;s %c r i }| j d \ }}|D ] }|j ^}}|||< ||fS )a! Process a CAPABILITIES command. Not supported by all servers.
Return:
- resp: server response if successful
- caps: a dictionary mapping capability names to lists of tokens
(for example {'VERSION': ['2'], 'OVER': [], LIST: ['ACTIVE', 'HEADERS'] })
CAPABILITIES)r ra )r r r r9 rY rZ rj s r r zNNTP.capabilitiesF sP )).9 e D JJLMD6 DJ Tzr )r c ^ t |t j t j f s.t dj |j
j t || j dk \ }}dj || }| j || \ }}|| j | fS )zProcess a NEWGROUPS command. Arguments:
- date: a date or datetime object
Return:
- resp: server response if successful
- list: list of newsgroup names
Athe date parameter must be a date or datetime object, not '{:40}'rr zNEWGROUPS {0} {1}) rG rx r4 TypeErrorr __class__r r r r r )r r4 r ry rz cmdr r9 s r newgroupszNNTP.newgroupsT s $
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? /tT5F5F5J K(!((8<))#t4 eT__U+++r c 4 t |t j t j f s.t dj |j
j t || j dk \ }}dj ||| }| j || S )zProcess a NEWNEWS command. Arguments:
- group: group name or '*'
- date: a date or datetime object
Return:
- resp: server response if successful
- list: list of message ids
r rr zNEWNEWS {0} {1} {2})
rG rx r4 r r r r r r r )r r< r4 r ry rz r s r newnewsz NNTP.newnewsd s $
>? $fT^^%<%< =?
? /tT5F5F5J K(#**5(HE""3--r c f |d|z }nd}| j || \ }}|| j | fS )a@ Process a LIST or LIST ACTIVE command. Arguments:
- group_pattern: a pattern indicating which groups to query
- file: Filename string or file object to store the result in
Returns:
- resp: server response if successful
- list: list of (group, last, first, flag) (strings)
z LIST ACTIVE LIST)r r )r
group_patternr commandr r9 s r r z NNTP.listt sC $$}4G G))'48 eT__U+++r c N t j d }| j d|z \ }}|j d s| j d|z \ }}i }|D ]D }|j |j }|s%|j
dd \ } }
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|| < F |r||fS y)Nz ^(?P<group>[^ ]+)[ ]+(.*)$zLIST NEWSGROUPS r) zXGTITLE rQ rr rE )recompiler rd searchstripr< ) r r
return_allline_patr r9 groupsraw_linematchrZ descs r _getdescriptionszNNTP._getdescriptions s :: >?))*<}*LM eu% --j=.HIKD% $H OOHNN$45E "[[A .
d! K #t
$ < r c & | j |d S )a Get a description for a single group. If more than one
group matches ('group' is a pattern), return the first. If no
group matches, return an empty string.
This elides the response code from the server, since it can
only be '215' or '285' (for xgtitle) anyway. If the response
code is needed, use the 'descriptions' method.
NOTE: This neither checks for a wildcard in 'group' nor does
it check whether the group actually exists.Fr )r r< s r descriptionzNNTP.description s $$UE22r c & | j |d S )z'Get descriptions for a range of groups.Tr )r r
s r descriptionszNNTP.descriptions s $$]D99r c T | j d|z }|j d s t | |j }dx}x}}t | }|dkD r1|d }|dkD r'|d }|dkD r |d }|dkD r|d j }|t
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| |fS )a Process a GROUP command. Argument:
- group: the group name
Returns:
- resp: server response if successful
- count: number of articles
- first: first article number
- last: last article number
- name: the group name
zGROUP r( r rQ rr r rs )r rd r ra rW rS rb )r rZ r wordscountr> r= ns r r< z
NNTP.group s ~~ho.u% & &
J q5!HE1u aq5 8D1u $Qx~~ /SZUSY<<r c & | j d| S )a Process a HELP command. Argument:
- file: Filename string or file object to store the result in
Returns:
- resp: server response if successful
- list: list of strings returned by the server in response to the
HELP command
HELP)r )r r s r helpz NNTP.help s ""6400r c |j d s t | |j }t |d }|d }|||fS )z_Internal: parse the response line of a STAT, NEXT, LAST,
ARTICLE, HEAD or BODY command.22rQ rr )rd r ra rb )r r r! art_numrB s r
_statparsezNNTP._statparse sI t$ & &
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Wj((r c F | j | }| j | S )z/Internal: process a STAT, NEXT or LAST command.)r r* )r rY r s r _statcmdz
NNTP._statcmd s ~~d#t$$r c h |r | j dj | S | j d S )a( Process a STAT command. Argument:
- message_spec: article number or message id (if not specified,
the current article is selected)
Returns:
- resp: server response if successful
- art_num: the article number
- message_id: the message id
zSTAT {0}STAT)r, r )r message_specs r statz NNTP.stat s0 ==!2!2<!@A A==( (r c $ | j d S )z;Process a NEXT command. No arguments. Return as for STAT.NEXTr, r s r nextz NNTP.next }}V$$r c $ | j d S )z;Process a LAST command. No arguments. Return as for STAT.LASTr3 r s r r= z NNTP.last r5 r c t | j || \ }}| j | \ }}}|t ||| fS )z2Internal: process a HEAD, BODY or ARTICLE command.)r r* r@ )r rY r r r9 r) rB s r _artcmdz NNTP._artcmd s? mmD$/ e$(OOD$9!gz[*e<<<r c R |dj | }nd}| j || S )a0 Process a HEAD command. Argument:
- message_spec: article number or message id
- file: filename string or file object to store the headers in
Returns:
- resp: server response if successful
- ArticleInfo: (article number, message id, list of header lines)
zHEAD {0}HEADr r9 r r/ r r s r headz NNTP.head 0 # ##L1CC||C&&r c R |dj | }nd}| j || S )a+ Process a BODY command. Argument:
- message_spec: article number or message id
- file: filename string or file object to store the body in
Returns:
- resp: server response if successful
- ArticleInfo: (article number, message id, list of body lines)
zBODY {0}BODYr< r= s r bodyz NNTP.body r? r c R |dj | }nd}| j || S )a5 Process an ARTICLE command. Argument:
- message_spec: article number or message id
- file: filename string or file object to store the article in
Returns:
- resp: server response if successful
- ArticleInfo: (article number, message id, list of article lines)
z ARTICLE {0}ARTICLEr< r= s r articlez NNTP.article s0 # &&|4CC||C&&r c $ | j d S )zYProcess a SLAVE command. Returns:
- resp: server response if successful
SLAVE)r r s r slavez
NNTP.slave$ s ~~g&&r c t j d | j dj || | \ }}fd}||D cg c]
} || c}fS c c}w )ai Process an XHDR command (optional server extension). Arguments:
- hdr: the header type (e.g. 'subject')
- str: an article nr, a message id, or a range nr1-nr2
- file: Filename string or file object to store the result in
Returns:
- resp: server response if successful
- list: list of (nr, value) strings
z^([0-9]+) ?(.*)
?z XHDR {0} {1}c R j | }|r|j dd S | S )NrQ rr )r r< )rY mpats r
remove_numberz NNTP.xhdr.<locals>.remove_number5 s' $A$%1771a= /4 /r )r r r r ) r hdrr r r r9 rM rY rL s @r xhdrz NNTP.xhdr* s\ jj-.)).*?*?S*I4P e 0 e<dmD)<<<<s Ac | j dj || | \ }}| j }|t || fS )aF Process an XOVER command (optional server extension) Arguments:
- start: start of range
- end: end of range
- file: Filename string or file object to store the result in
Returns:
- resp: server response if successful
- list: list of dicts containing the response fields
z
XOVER {0}-{1})r r r rp )r startendr r r9 rX s r xoverz
NNTP.xover: sJ ))/*@*@*L*.0 e""$_UC000r c
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||dz |z }| j || \ }}| j
}|t || fS )a Process an OVER command. If the command isn't supported, fall
back to XOVER. Arguments:
- message_spec:
- either a message id, indicating the article to fetch
information about
- or a (start, end) tuple, indicating a range of article numbers;
if end is None, information up to the newest message will be
retrieved
- or None, indicating the current article number must be used
- file: Filename string or file object to store the result in
Returns:
- resp: server response if successful
- list: list of dicts containing the response fields
NOTE: the "message id" form isn't supported by XOVER
OVERXOVERz {0}-{1}rE r )r rG tupler r r r rp ) r r/ r r rQ rR r r9 rX s r overz NNTP.overH s " $**,f' lUDM 2%JE3 :$$UCI26 6C
%)l*C))#t4 e""$_UC000r c | j d }|j d s t | |j }t | dk7 r t | |d }t | dk7 r t | |t
|d fS )zProcess the DATE command.
Returns:
- resp: server response if successful
- date: datetime object
DATE111rr rQ N)r rd r ra rW r r )r r elemr4 s r r4 z NNTP.datec s{ ~~f%u% & &zz| t9> % %Aw t9? % %_T4000r c | j | }|j d s t | t |t t
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)r rd r rG r8 bytearray
splitlinesendswithr rstripr r r r )r r fr rY s r _postz
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zz&$''r c D | j dj | | S )a Process an IHAVE command. Arguments:
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