<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <title>8.13.1 Template Objects </title> <META NAME="description" CONTENT="8.13.1 Template Objects "> <META NAME="keywords" CONTENT="lib"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <meta http-equiv="Content-Type" content="text/html; charset="> <link rel="STYLESHEET" href="lib.css"> <link rel="first" href="lib.html"> <link rel="contents" href="contents.html" title="Contents"> <link rel="index" href="genindex.html" title="Index"> <LINK REL="previous" href="module-pipes.html"> <LINK REL="up" href="module-pipes.html"> <LINK REL="next" href="module-posixfile.html"> </head> <body> <DIV CLASS="navigation"> <table align="center" width="100%" cellpadding="0" cellspacing="2"> <tr> <td><A href="module-pipes.html"><img src="../icons/previous.gif" border="0" height="32" alt="Previous Page" width="32"></A></td> <td><A href="module-pipes.html"><img src="../icons/up.gif" border="0" height="32" alt="Up One Level" width="32"></A></td> <td><A href="module-posixfile.html"><img src="../icons/next.gif" border="0" height="32" alt="Next Page" width="32"></A></td> <td align="center" width="100%">Python Library Reference</td> <td><A href="contents.html"><img src="../icons/contents.gif" border="0" height="32" alt="Contents" width="32"></A></td> <td><a href="modindex.html" title="Module Index"><img src="../icons/modules.gif" border="0" height="32" alt="Module Index" width="32"></a></td> <td><A href="genindex.html"><img src="../icons/index.gif" border="0" height="32" alt="Index" width="32"></A></td> </tr></table> <b class="navlabel">Previous:</b> <a class="sectref" href="module-pipes.html">8.13 pipes </A> <b class="navlabel">Up:</b> <a class="sectref" href="module-pipes.html">8.13 pipes </A> <b class="navlabel">Next:</b> <a class="sectref" href="module-posixfile.html">8.14 posixfile </A> <br><hr> </DIV> <!--End of Navigation Panel--> <H2><A NAME="SECTION00101310000000000000000"> </A> <BR> 8.13.1 Template Objects </H2> <P> Template objects following methods: <P> <dl><dt><b><a name="l2h-2184"><tt class="method">reset</tt></a></b>() <dd> Restore a pipeline template to its initial state. </dl> <P> <dl><dt><b><a name="l2h-2185"><tt class="method">clone</tt></a></b>() <dd> Return a new, equivalent, pipeline template. </dl> <P> <dl><dt><b><a name="l2h-2186"><tt class="method">debug</tt></a></b>(<var>flag</var>) <dd> If <var>flag</var> is true, turn debugging on. Otherwise, turn debugging off. When debugging is on, commands to be executed are printed, and the shell is given <code>set -x</code> command to be more verbose. </dl> <P> <dl><dt><b><a name="l2h-2187"><tt class="method">append</tt></a></b>(<var>cmd, kind</var>) <dd> Append a new action at the end. The <var>cmd</var> variable must be a valid bourne shell command. The <var>kind</var> variable consists of two letters. <P> The first letter can be either of <code>'-'</code> (which means the command reads its standard input), <code>'f'</code> (which means the commands reads a given file on the command line) or <code>'.'</code> (which means the commands reads no input, and hence must be first.) <P> Similarly, the second letter can be either of <code>'-'</code> (which means the command writes to standard output), <code>'f'</code> (which means the command writes a file on the command line) or <code>'.'</code> (which means the command does not write anything, and hence must be last.) </dl> <P> <dl><dt><b><a name="l2h-2188"><tt class="method">prepend</tt></a></b>(<var>cmd, kind</var>) <dd> Add a new action at the beginning. See <tt class="method">append()</tt> for explanations of the arguments. </dl> <P> <dl><dt><b><a name="l2h-2189"><tt class="method">open</tt></a></b>(<var>file, mode</var>) <dd> Return a file-like object, open to <var>file</var>, but read from or written to by the pipeline. Note that only one of <code>'r'</code>, <code>'w'</code> may be given. </dl> <P> <dl><dt><b><a name="l2h-2190"><tt class="method">copy</tt></a></b>(<var>infile, outfile</var>) <dd> Copy <var>infile</var> to <var>outfile</var> through the pipe. </dl> <DIV CLASS="navigation"> <p><hr> <table align="center" width="100%" cellpadding="0" cellspacing="2"> <tr> <td><A href="module-pipes.html"><img src="../icons/previous.gif" border="0" height="32" alt="Previous Page" width="32"></A></td> <td><A href="module-pipes.html"><img src="../icons/up.gif" border="0" height="32" alt="Up One Level" width="32"></A></td> <td><A href="module-posixfile.html"><img src="../icons/next.gif" border="0" height="32" alt="Next Page" width="32"></A></td> <td align="center" width="100%">Python Library Reference</td> <td><A href="contents.html"><img src="../icons/contents.gif" border="0" height="32" alt="Contents" width="32"></A></td> <td><a href="modindex.html" title="Module Index"><img src="../icons/modules.gif" border="0" height="32" alt="Module Index" width="32"></a></td> <td><A href="genindex.html"><img src="../icons/index.gif" border="0" height="32" alt="Index" width="32"></A></td> </tr></table> <b class="navlabel">Previous:</b> <a class="sectref" href="module-pipes.html">8.13 pipes </A> <b class="navlabel">Up:</b> <a class="sectref" href="module-pipes.html">8.13 pipes </A> <b class="navlabel">Next:</b> <a class="sectref" href="module-posixfile.html">8.14 posixfile </A> <hr> <span class="release-info">Release 2.2, documentation updated on December 21, 2001.</span> </DIV> <!--End of Navigation Panel--> <ADDRESS> See <i><a href="about.html">About this document...</a></i> for information on suggesting changes. </ADDRESS> </BODY> </HTML>
