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Add optional 4th argument to [r]find and [r]index (end of slice).

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Guido van Rossum 1997-03-14 04:13:56 +00:00
parent 612316f016
commit 7b7c578616
5 changed files with 99 additions and 43 deletions
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17
Doc/lib/libstring.tex
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@ -103,24 +103,27 @@ This doesn't understand other non-printing characters or escape
sequences.
\end{funcdesc}
\begin{funcdesc}{find}{s\, sub\optional{\, start}}
Return the lowest index in \var{s} not smaller than \var{start} where the
substring \var{sub} is found. Return \code{-1} when \var{sub}
does not occur as a substring of \var{s} with index at least \var{start}.
\begin{funcdesc}{find}{s\, sub\optional{\, start\optional{\,end}}}
Return the lowest index in \var{s} not smaller than \var{start} and not
greater than \var{end} where the substring \var{sub} is found. Return
\code{-1} when \var{sub} does not occur as a substring of \var{s} with
index at least \var{start} and less than \var{end}.
If \var{start} is omitted, it defaults to \code{0}. If \var{start} is
negative, \code{len(\var{s})} is added.
If \var{end} is omitted, it defaults to \code{len(\var{s})}. If
\var{end} is negative, \code{len(\var{s})} is added.
\end{funcdesc}
\begin{funcdesc}{rfind}{s\, sub\optional{\, start}}
\begin{funcdesc}{rfind}{s\, sub\optional{\, start\optional{\,end}}}
Like \code{find} but find the highest index.
\end{funcdesc}
\begin{funcdesc}{index}{s\, sub\optional{\, start}}
\begin{funcdesc}{index}{s\, sub\optional{\, start\optional{\,end}}}
Like \code{find} but raise \code{ValueError} when the substring is
not found.
\end{funcdesc}
\begin{funcdesc}{rindex}{s\, sub\optional{\, start}}
\begin{funcdesc}{rindex}{s\, sub\optional{\, start\optional{\,end}}}
Like \code{rfind} but raise \code{ValueError} when the substring is
not found.
\end{funcdesc}