<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <title>18.1.5 AST Objects </title> <META NAME="description" CONTENT="18.1.5 AST 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="next" HREF="node556.html"> <LINK REL="previous" HREF="node554.html"> <LINK REL="up" href="module-parser.html"> <LINK REL="next" HREF="node556.html"> </head> <body> <DIV CLASS="navigation"> <table align="center" width="100%" cellpadding="0" cellspacing="2"> <tr> <td><A HREF="node554.html"><img src="../icons/previous.gif" border="0" height="32" alt="Previous Page" width="32"></A></td> <td><A href="module-parser.html"><img src="../icons/up.gif" border="0" height="32" alt="Up One Level" width="32"></A></td> <td><A HREF="node556.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="node554.html">18.1.4 Exceptions and Error</A> <b class="navlabel">Up:</b> <a class="sectref" href="module-parser.html">18.1 parser </A> <b class="navlabel">Next:</b> <a class="sectref" HREF="node556.html">18.1.6 Examples</A> <br><hr> </DIV> <!--End of Navigation Panel--> <H2><A NAME="SECTION0020150000000000000000"> </A> <BR> 18.1.5 AST Objects </H2> <P> Ordered and equality comparisons are supported between AST objects. Pickling of AST objects (using the <tt class="module"><a href="module-pickle.html">pickle</a></tt> module) is also supported. <P> <dl><dt><b><a name="l2h-3779"><tt>ASTType</tt></a></b> <dd> The type of the objects returned by <tt class="function">expr()</tt>, <tt class="function">suite()</tt> and <tt class="function">sequence2ast()</tt>. </dl> <P> AST objects have the following methods: <P> <dl><dt><b><a name="l2h-3780"><tt class="method">compile</tt></a></b>(<big>[</big><var>filename</var><big>]</big>) <dd> Same as <code>compileast(<var>ast</var>, <var>filename</var>)</code>. </dl> <P> <dl><dt><b><a name="l2h-3781"><tt class="method">isexpr</tt></a></b>() <dd> Same as <code>isexpr(<var>ast</var>)</code>. </dl> <P> <dl><dt><b><a name="l2h-3782"><tt class="method">issuite</tt></a></b>() <dd> Same as <code>issuite(<var>ast</var>)</code>. </dl> <P> <dl><dt><b><a name="l2h-3783"><tt class="method">tolist</tt></a></b>(<big>[</big><var>line_info</var><big>]</big>) <dd> Same as <code>ast2list(<var>ast</var>, <var>line_info</var>)</code>. </dl> <P> <dl><dt><b><a name="l2h-3784"><tt class="method">totuple</tt></a></b>(<big>[</big><var>line_info</var><big>]</big>) <dd> Same as <code>ast2tuple(<var>ast</var>, <var>line_info</var>)</code>. </dl> <P> <DIV CLASS="navigation"> <p><hr> <table align="center" width="100%" cellpadding="0" cellspacing="2"> <tr> <td><A HREF="node554.html"><img src="../icons/previous.gif" border="0" height="32" alt="Previous Page" width="32"></A></td> <td><A href="module-parser.html"><img src="../icons/up.gif" border="0" height="32" alt="Up One Level" width="32"></A></td> <td><A HREF="node556.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="node554.html">18.1.4 Exceptions and Error</A> <b class="navlabel">Up:</b> <a class="sectref" href="module-parser.html">18.1 parser </A> <b class="navlabel">Next:</b> <a class="sectref" HREF="node556.html">18.1.6 Examples</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>
