NNTP Objects
------------
NNTP instances have the following methods. The RESPONSE that is
returned as the first item in the return tuple of almost all methods is
the server's response: a string beginning with a three-digit code. If
the server's response indicates an error, the method raises one of the
above exceptions.
`getwelcome()'
Return the welcome message sent by the server in reply to the
initial connection. (This message sometimes contains disclaimers
or help information that may be relevant to the user.)
`set_debuglevel(level)'
Set the instance's debugging level. This controls the amount of
debugging output printed. The default, `0', produces no debugging
output. A value of `1' produces a moderate amount of debugging
output, generally a single line per request or response. A value
of `2' or higher produces the maximum amount of debugging output,
logging each line sent and received on the connection (including
message text).
`newgroups(date, time)'
Send a `NEWGROUPS' command. The DATE argument should be a string
of the form `'YYMMDD'' indicating the date, and TIME should be a
string of the form `'HHMMSS'' indicating the time. Return a pair
`(RESPONSE, GROUPS)' where GROUPS is a list of group names that
are new since the given date and time.
`newnews(group, date, time)'
Send a `NEWNEWS' command. Here, GROUP is a group name or `'*'',
and DATE and TIME have the same meaning as for `newgroups()'.
Return a pair `(RESPONSE, ARTICLES)' where ARTICLES is a list of
article ids.
`list()'
Send a `LIST' command. Return a pair `(RESPONSE, LIST)' where
LIST is a list of tuples. Each tuple has the form `(GROUP, LAST,
FIRST, FLAG)', where GROUP is a group name, LAST and FIRST are the
last and first article numbers (as strings), and FLAG is `'y'' if
posting is allowed, `'n'' if not, and `'m'' if the newsgroup is
moderated. (Note the ordering: LAST, FIRST.)
`group(name)'
Send a `GROUP' command, where NAME is the group name. Return a
tuple `(RESPONSE, COUNT, FIRST, LAST, NAME)' where COUNT is the
(estimated) number of articles in the group, FIRST is the first
article number in the group, LAST is the last article number in
the group, and NAME is the group name. The numbers are returned
as strings.
`help()'
Send a `HELP' command. Return a pair `(RESPONSE, LIST)' where
LIST is a list of help strings.
`stat(id)'
Send a `STAT' command, where ID is the message id (enclosed in `<'
and `>') or an article number (as a string). Return a triple
`(RESPONSE, NUMBER, ID)' where NUMBER is the article number (as a
string) and ID is the article id (enclosed in `<' and `>').
`next()'
Send a `NEXT' command. Return as for `stat()'.
`last()'
Send a `LAST' command. Return as for `stat()'.
`head(id)'
Send a `HEAD' command, where ID has the same meaning as for
`stat()'. Return a tuple `(RESPONSE, NUMBER, ID, LIST)' where the
first three are the same as for `stat()', and LIST is a list of
the article's headers (an uninterpreted list of lines, without
trailing newlines).
`body(id)'
Send a `BODY' command, where ID has the same meaning as for
`stat()'. Return as for `head()'.
`article(id)'
Send an `ARTICLE' command, where ID has the same meaning as for
`stat()'. Return as for `head()'.
`slave()'
Send a `SLAVE' command. Return the server's RESPONSE.
`xhdr(header, string)'
Send an `XHDR' command. This command is not defined in the RFC
but is a common extension. The HEADER argument is a header
keyword, e.g. `'subject''. The STRING argument should have the
form `'FIRST-LAST'' where FIRST and LAST are the first and last
article numbers to search. Return a pair `(RESPONSE, LIST)',
where LIST is a list of pairs `(ID, TEXT)', where ID is an article
id (as a string) and TEXT is the text of the requested header for
that article.
`post(file)'
Post an article using the `POST' command. The FILE argument is an
open file object which is read until EOF using its `readline()'
method. It should be a well-formed news article, including the
required headers. The `post()' method automatically escapes lines
beginning with `.'.
`ihave(id, file)'
Send an `IHAVE' command. If the response is not an error, treat
FILE exactly as for the `post()' method.
`date()'
Return a triple `(RESPONSE, DATE, TIME)', containing the current
date and time in a form suitable for the `newnews()' and
`newgroups()' methods. This is an optional NNTP extension, and
may not be supported by all servers.
`xgtitle(name)'
Process an `XGTITLE' command, returning a pair `(RESPONSE, LIST)',
where LIST is a list of tuples containing `(NAME, TITLE)'. This
is an optional NNTP extension, and may not be supported by all
servers.
`xover(start, end)'
Return a pair `(RESP, LIST)'. LIST is a list of tuples, one for
each article in the range delimited by the START and END article
numbers. Each tuple is of the form `(ARTICLE NUMBER, SUBJECT,
POSTER, DATE, ID, REFERENCES, SIZE, LINES)'. This is an optional
NNTP extension, and may not be supported by all servers.
`xpath(id)'
Return a pair `(RESP, PATH)', where PATH is the directory path to
the article with message ID ID. This is an optional NNTP
extension, and may not be supported by all servers.
`quit()'
Send a `QUIT' command and close the connection. Once this method
has been called, no other methods of the NNTP object should be
called.