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Document maxsplit arg for split(), with incompatibility note about 1.5 

release bug.

Document groups() changed behaviour (now always returns tuple).
This commit is contained in:
Guido van Rossum 1998-01-12 18:58:53 +00:00
parent 2b2b3f9bcb
commit 97546399c7
2 changed files with 24 additions and 6 deletions
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15
Doc/lib/libre.tex
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@ -350,16 +350,23 @@ expression will be used several times in a single program.
Split \var{string} by the occurrences of \var{pattern}. If
capturing parentheses are used in pattern, then occurrences of
patterns or subpatterns are also returned.
If \var{maxsplit} is nonzero, at most \var{maxsplit} splits
occur, and the remainder of the string is returned as the final
element of the list. (Incompatibility note: in the original Python
1.5 release, \var{maxsplit} was ignored. This has been fixed in
later releases.)
%
\bcode\begin{verbatim}
>>> re.split('[\W]+', 'Words, words, words.')
['Words', 'words', 'words', '']
>>> re.split('([\W]+)', 'Words, words, words.')
['Words', ', ', 'words', ', ', 'words', '.', '']
>>> re.split('[\W]+', 'Words, words, words.', 1)
['Words', 'words, words.']
\end{verbatim}\ecode
%
This function combines and extends the functionality of
the old \code{regex.split()} and \code{regex.splitx()}.
the old \code{regsub.split()} and \code{regsub.splitx()}.
\end{funcdesc}
\begin{funcdesc}{sub}{pattern\, repl\, string\optional{, count=0}}
@ -499,8 +506,10 @@ After performing this match, \code{m.group(1)} is \code{'3'}, as is \code{m.grou
\begin{funcdesc}{groups}{}
Return a tuple containing all the subgroups of the match, from 1 up to
however many groups are in the pattern. Groups that did not
participate in the match have values of \code{None}. If the tuple
would only be one element long, a string will be returned instead.
participate in the match have values of \code{None}. (Incompatibility
note: in the original Python 1.5 release, if the tuple was one element
long, a string would be returned instead. In later versions, a
singleton tuple is returned in such cases.)
\end{funcdesc}
\begin{funcdesc}{start}{group}

15
Doc/libre.tex
View File

@ -350,16 +350,23 @@ expression will be used several times in a single program.
Split \var{string} by the occurrences of \var{pattern}. If
capturing parentheses are used in pattern, then occurrences of
patterns or subpatterns are also returned.
If \var{maxsplit} is nonzero, at most \var{maxsplit} splits
occur, and the remainder of the string is returned as the final
element of the list. (Incompatibility note: in the original Python
1.5 release, \var{maxsplit} was ignored. This has been fixed in
later releases.)
%
\bcode\begin{verbatim}
>>> re.split('[\W]+', 'Words, words, words.')
['Words', 'words', 'words', '']
>>> re.split('([\W]+)', 'Words, words, words.')
['Words', ', ', 'words', ', ', 'words', '.', '']
>>> re.split('[\W]+', 'Words, words, words.', 1)
['Words', 'words, words.']
\end{verbatim}\ecode
%
This function combines and extends the functionality of
the old \code{regex.split()} and \code{regex.splitx()}.
the old \code{regsub.split()} and \code{regsub.splitx()}.
\end{funcdesc}
\begin{funcdesc}{sub}{pattern\, repl\, string\optional{, count=0}}
@ -499,8 +506,10 @@ After performing this match, \code{m.group(1)} is \code{'3'}, as is \code{m.grou
\begin{funcdesc}{groups}{}
Return a tuple containing all the subgroups of the match, from 1 up to
however many groups are in the pattern. Groups that did not
participate in the match have values of \code{None}. If the tuple
would only be one element long, a string will be returned instead.
participate in the match have values of \code{None}. (Incompatibility
note: in the original Python 1.5 release, if the tuple was one element
long, a string would be returned instead. In later versions, a
singleton tuple is returned in such cases.)
\end{funcdesc}
\begin{funcdesc}{start}{group}