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<H1><A NAME="SECTION0025500000000000000000"></A><A NAME="obsolete-modules"></A>
<BR>
A.5 Obsolete
</H1>

<P>
These modules are not normally available for import; additional work
must be done to make them available.

<P>
Those which are written in Python will be installed into the directory
<span class="file">lib-old/</span> installed as part of the standard library.  To use
these, the directory must be added to <code>sys.path</code>, possibly using
<a class="envvar" id='l2h-5293' xml:id='l2h-5293'>PYTHONPATH</a>.

<P>
Obsolete extension modules written in C are not built by default.
Under <span class="Unix">Unix</span>, these must be enabled by uncommenting the appropriate
lines in <span class="file">Modules/Setup</span> in the build tree and either rebuilding
Python if the modules are statically linked, or building and
installing the shared object if using dynamically-loaded extensions.

<P>
<DL>
<DT><STRONG><tt class="module">addpack</tt></STRONG></DT>
<DD>-- Alternate approach to packages.  Use the built-in package support
instead.

<P>
</DD>
<DT><STRONG><tt class="module">cmp</tt></STRONG></DT>
<DD>-- File comparison function.  Use the newer <tt class="module"><a href="module-filecmp.html">filecmp</a></tt> instead.

<P>
</DD>
<DT><STRONG><tt class="module">cmpcache</tt></STRONG></DT>
<DD>-- Caching version of the obsolete <tt class="module">cmp</tt> module.  Use the
newer <tt class="module"><a href="module-filecmp.html">filecmp</a></tt> instead.

<P>
</DD>
<DT><STRONG><tt class="module">codehack</tt></STRONG></DT>
<DD>-- Extract function name or line number from a function
code object (these are now accessible as attributes:
<tt class="member">co.co_name</tt>, <tt class="member">func.func_name</tt>,
<tt class="member">co.co_firstlineno</tt>).

<P>
</DD>
<DT><STRONG><tt class="module">dircmp</tt></STRONG></DT>
<DD>-- Class to build directory diff tools on (may become a demo or tool).
<div class="versionnote"><b>Deprecated since release 2.0.</b>
The <tt class="module"><a href="module-filecmp.html">filecmp</a></tt> module replaces
<tt class="module">dircmp</tt>.</div><p></p>

<P>
</DD>
<DT><STRONG><tt class="module">dump</tt></STRONG></DT>
<DD>-- Print python code that reconstructs a variable.

<P>
</DD>
<DT><STRONG><tt class="module">fmt</tt></STRONG></DT>
<DD>-- Text formatting abstractions (too slow).

<P>
</DD>
<DT><STRONG><tt class="module">lockfile</tt></STRONG></DT>
<DD>-- Wrapper around FCNTL file locking (use
<tt class="function">fcntl.lockf()</tt>/<tt class="function">flock()</tt> instead; see <tt class="module"><a href="module-fcntl.html">fcntl</a></tt>).

<P>
</DD>
<DT><STRONG><tt class="module">newdir</tt></STRONG></DT>
<DD>-- New <tt class="function">dir()</tt> function (the standard <tt class="function">dir()</tt> is
now just as good).

<P>
</DD>
<DT><STRONG><tt class="module">Para</tt></STRONG></DT>
<DD>-- Helper for <tt class="module">fmt</tt>.

<P>
</DD>
<DT><STRONG><tt class="module">poly</tt></STRONG></DT>
<DD>-- Polynomials.

<P>
</DD>
<DT><STRONG><tt class="module">regex</tt></STRONG></DT>
<DD>-- Emacs-style regular expression support; may still be used in some
old code (extension module).  Refer to the
<em class="citetitle"><a
 href="http://www.python.org/doc/1.6/lib/module-regex.html"
 title="Python
1.6 Documentation"
 >Python
1.6 Documentation</a></em> for documentation.

<P>
</DD>
<DT><STRONG><tt class="module">regsub</tt></STRONG></DT>
<DD>-- Regular expression based string replacement utilities, for use
with <tt class="module">regex</tt> (extension module).  Refer to the
<em class="citetitle"><a
 href="http://www.python.org/doc/1.6/lib/module-regsub.html"
 title="Python
1.6 Documentation"
 >Python
1.6 Documentation</a></em> for documentation.

<P>
</DD>
<DT><STRONG><tt class="module">tb</tt></STRONG></DT>
<DD>-- Print tracebacks, with a dump of local variables (use
<tt class="function">pdb.pm()</tt> or <tt class="module"><a href="module-traceback.html">traceback</a></tt> instead).

<P>
</DD>
<DT><STRONG><tt class="module">timing</tt></STRONG></DT>
<DD>-- Measure time intervals to high resolution (use
<tt class="function">time.clock()</tt> instead).  (This is an extension module.)

<P>
</DD>
<DT><STRONG><tt class="module">tzparse</tt></STRONG></DT>
<DD>-- Parse a timezone specification (unfinished; may disappear in the
future, and does not work when the <a class="envvar" id='l2h-5294' xml:id='l2h-5294'>TZ</a> environment variable is
not set).

<P>
</DD>
<DT><STRONG><tt class="module">util</tt></STRONG></DT>
<DD>-- Useful functions that don't fit elsewhere.

<P>
</DD>
<DT><STRONG><tt class="module">whatsound</tt></STRONG></DT>
<DD>-- Recognize sound files; use <tt class="module"><a href="module-sndhdr.html">sndhdr</a></tt> instead.

<P>
</DD>
<DT><STRONG><tt class="module">zmod</tt></STRONG></DT>
<DD>-- Compute properties of mathematical ``fields.''
</DD>
</DL>

<P>
The following modules are obsolete, but are likely to re-surface as
tools or scripts:

<P>
<DL>
<DT><STRONG><tt class="module">find</tt></STRONG></DT>
<DD>-- Find files matching pattern in directory tree.

<P>
</DD>
<DT><STRONG><tt class="module">grep</tt></STRONG></DT>
<DD>-- <b class="program">grep</b> implementation in Python.

<P>
</DD>
<DT><STRONG><tt class="module">packmail</tt></STRONG></DT>
<DD>-- Create a self-unpacking <span class="Unix">Unix</span> shell archive.
</DD>
</DL>

<P>
The following modules were documented in previous versions of this
manual, but are now considered obsolete.  The source for the
documentation is still available as part of the documentation source
archive.

<P>
<DL>
<DT><STRONG><tt class="module">ni</tt></STRONG></DT>
<DD>-- Import modules in ``packages.''  Basic package support is now
built in.  The built-in support is very similar to what is provided in
this module.

<P>
</DD>
<DT><STRONG><tt class="module">rand</tt></STRONG></DT>
<DD>-- Old interface to the random number generator.

<P>
</DD>
<DT><STRONG><tt class="module">soundex</tt></STRONG></DT>
<DD>-- Algorithm for collapsing names which sound similar to a shared
key.  The specific algorithm doesn't seem to match any published
algorithm.  (This is an extension module.)
</DD>
</DL>

<P>

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