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mass changes; fix titles; add examples; correct typos; clarifications;

Browse source 
unified style; etc.
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Guido van Rossum 1995-03-17 16:07:09 +00:00
parent 7760cdea81
commit 470be14c8a
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12
Doc/lib/libshelve.tex
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@ -1,7 +1,8 @@
\section{Built-in module \sectcode{shelve}}
\section{Standard Module \sectcode{shelve}}
\stmodindex{shelve}
\stmodindex{pickle}
\bimodindex{dbm}
\bimodindex{gdbm}
A ``shelf'' is a persistent, dictionary-like object. The difference
with ``dbm'' databases is that the values (not the keys!) in a shelf
@ -48,8 +49,11 @@ Dependent on the implementation, closing a persistent dictionary may
or may not be necessary to flush changes to disk.
\item
The \code{shelve} module does not support {\em concurrent} access to
shelved objects. Two programs should not try to simultaneously access
the same shelf.
The \code{shelve} module does not support {\em concurrent} read/write
access to shelved objects. (Multiple simultaneous read accesses are
safe.) When a program has a shelf open for writing, no other program
should have it open for reading or writing. \UNIX{} file locking can
be used to solve this, but this differs across \UNIX{} versions and
requires knowledge about the database implementation used.
\end{itemize}