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\section{\module{fnmatch} ---
\UNIX{} filename pattern matching}
\declaremodule{standard}{fnmatch}
\modulesynopsis{\UNIX\ shell style filename pattern matching.}
\index{filenames!wildcard expansion}
This module provides support for \UNIX{} shell-style wildcards, which
are \emph{not} the same as regular expressions (which are documented
in the \refmodule{re}\refstmodindex{re} module). The special
characters used in shell-style wildcards are:
\begin{tableii}{c|l}{code}{Pattern}{Meaning}
\lineii{*}{matches everything}
\lineii{?}{matches any single character}
\lineii{[\var{seq}]}{matches any character in \var{seq}}
\lineii{[!\var{seq}]}{matches any character not in \var{seq}}
\end{tableii}
Note that the filename separator (\code{'/'} on \UNIX) is \emph{not}
special to this module. See module
\refmodule{glob}\refstmodindex{glob} for pathname expansion
(\refmodule{glob} uses \function{fnmatch()} to match pathname
segments). Similarly, filenames starting with a period are
not special for this module, and are matched by the \code{*} and
\code{?} patterns.
\begin{funcdesc}{fnmatch}{filename, pattern}
Test whether the \var{filename} string matches the \var{pattern}
string, returning true or false. If the operating system is
case-insensitive, then both parameters will be normalized to all
lower- or upper-case before the comparison is performed. If you
require a case-sensitive comparison regardless of whether that's
standard for your operating system, use \function{fnmatchcase()}
instead.
\end{funcdesc}
\begin{funcdesc}{fnmatchcase}{filename, pattern}
Test whether \var{filename} matches \var{pattern}, returning true or
false; the comparison is case-sensitive.
\end{funcdesc}
\begin{funcdesc}{filter}{names, pattern}
Return the subset of the list of \var{names} that match \var{pattern}.
It is the same as \code{[n for n in names if fnmatch(n, pattern)]}, but
implemented more efficiently.
\versionadded{2.2}
\end{funcdesc}
\begin{seealso}
\seemodule{glob}{\UNIX{} shell-style path expansion.}
\end{seealso}
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