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<title>Debugging with GDB: Python Auto-loading</title>

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<a name="Python-Auto_002dloading"></a>
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<p>
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<a name="Python-Auto_002dloading-1"></a>
<h4 class="subsection">23.2.3 Python Auto-loading</h4>
<a name="index-Python-auto_002dloading"></a>

<p>When a new object file is read (for example, due to the <code>file</code>
command, or because the inferior has loaded a shared library),
<small>GDB</small> will look for Python support scripts in several ways:
<samp><var>objfile</var>-gdb.py</samp> and <code>.debug_gdb_scripts</code> section.
See <a href="Auto_002dloading-extensions.html#Auto_002dloading-extensions">Auto-loading extensions</a>.
</p>
<p>The auto-loading feature is useful for supplying application-specific
debugging commands and scripts.
</p>
<p>Auto-loading can be enabled or disabled,
and the list of auto-loaded scripts can be printed.
</p>
<dl compact="compact">
<dd><a name="set-auto_002dload-python_002dscripts"></a><a name="index-set-auto_002dload-python_002dscripts"></a>
</dd>
<dt><code>set auto-load python-scripts [on|off]</code></dt>
<dd><p>Enable or disable the auto-loading of Python scripts.
</p>
<a name="show-auto_002dload-python_002dscripts"></a><a name="index-show-auto_002dload-python_002dscripts"></a>
</dd>
<dt><code>show auto-load python-scripts</code></dt>
<dd><p>Show whether auto-loading of Python scripts is enabled or disabled.
</p>
<a name="info-auto_002dload-python_002dscripts"></a><a name="index-info-auto_002dload-python_002dscripts"></a>
<a name="index-print-list-of-auto_002dloaded-Python-scripts"></a>
</dd>
<dt><code>info auto-load python-scripts [<var>regexp</var>]</code></dt>
<dd><p>Print the list of all Python scripts that <small>GDB</small> auto-loaded.
</p>
<p>Also printed is the list of Python scripts that were mentioned in
the <code>.debug_gdb_scripts</code> section and were either not found
(see <a href="dotdebug_005fgdb_005fscripts-section.html#dotdebug_005fgdb_005fscripts-section">dotdebug_gdb_scripts section</a>) or were not auto-loaded due to
<code>auto-load safe-path</code> rejection (see <a href="Auto_002dloading.html#Auto_002dloading">Auto-loading</a>).
This is useful because their names are not printed when <small>GDB</small>
tries to load them and fails.  There may be many of them, and printing
an error message for each one is problematic.
</p>
<p>If <var>regexp</var> is supplied only Python scripts with matching names are printed.
</p>
<p>Example:
</p>
<div class="smallexample">
<pre class="smallexample">(gdb) info auto-load python-scripts
Loaded Script
Yes    py-section-script.py
       full name: /tmp/py-section-script.py
No     my-foo-pretty-printers.py
</pre></div>
</dd>
</dl>

<p>When reading an auto-loaded file or script, <small>GDB</small> sets the
<em>current objfile</em>.  This is available via the <code>gdb.current_objfile</code>
function (see <a href="Objfiles-In-Python.html#Objfiles-In-Python">Objfiles In Python</a>).  This can be useful for
registering objfile-specific pretty-printers and frame-filters.
</p>
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