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Tip revision: 2d8697f32c81f3db1e08ce198d5cebdeff5cc917 authored by Anthony Baxter on 18 September 2006, 06:51:50 UTC
Preparing for 2.5 final.
Preparing for 2.5 final.
Tip revision: 2d8697f
libcmp.tex
\section{\module{cmp} ---
File comparisons}
\declaremodule{standard}{cmp}
\sectionauthor{Moshe Zadka}{moshez@zadka.site.co.il}
\modulesynopsis{Compare files very efficiently.}
\deprecated{1.6}{Use the \refmodule{filecmp} module instead.}
The \module{cmp} module defines a function to compare files, taking all
sort of short-cuts to make it a highly efficient operation.
The \module{cmp} module defines the following function:
\begin{funcdesc}{cmp}{f1, f2}
Compare two files given as names. The following tricks are used to
optimize the comparisons:
\begin{itemize}
\item Files with identical type, size and mtime are assumed equal.
\item Files with different type or size are never equal.
\item The module only compares files it already compared if their
signature (type, size and mtime) changed.
\item No external programs are called.
\end{itemize}
\end{funcdesc}
Example:
\begin{verbatim}
>>> import cmp
>>> cmp.cmp('libundoc.tex', 'libundoc.tex')
1
>>> cmp.cmp('libundoc.tex', 'lib.tex')
0
\end{verbatim}