ref: 678be8399090b9eb90f983b1b4105495893f57f1
dir: /sys/src/cmd/python/Doc/lib/libcmp.tex/
\section{\module{cmp} --- File comparisons} \declaremodule{standard}{cmp} \sectionauthor{Moshe Zadka}{[email protected]} \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}