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dbus ::
service ::
Object ::
Class Object
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class Object</h1><p class="nomargin-top"><span class="codelink"><a href="dbus.service-pysrc.html#Object">source code</a></span></p>
<pre class="base-tree">
object --+
|
<a href="dbus.service.Interface-class.html">Interface</a> --+
|
<strong class="uidshort">Object</strong>
</pre>
<dl><dt>Known Subclasses:</dt>
<dd>
<ul class="subclass-list">
<li><a href="dbus.gi_service.ExportedGObject-class.html">gi_service.ExportedGObject</a></li><li>, <a href="dbus.gobject_service.ExportedGObject-class.html">gobject_service.ExportedGObject</a></li><li>, <a href="dbus.service.FallbackObject-class.html">FallbackObject</a></li> </ul>
</dd></dl>
<hr />
<p>A base class for exporting your own Objects across the Bus.</p>
<p>Just inherit from Object and mark exported methods with the
@<a href="dbus.decorators-module.html#method" class="link">dbus.service.method</a> or @<a href="dbus.decorators-module.html#signal" class="link">dbus.service.signal</a> decorator.</p>
<p>Example:</p>
<pre class="rst-literal-block">
class Example(dbus.service.object):
def __init__(self, object_path):
dbus.service.Object.__init__(self, dbus.SessionBus(), path)
self._last_input = None
@dbus.service.method(interface='com.example.Sample',
in_signature='v', out_signature='s')
def StringifyVariant(self, var):
self.LastInputChanged(var) # emits the signal
return str(var)
@dbus.service.signal(interface='com.example.Sample',
signature='v')
def LastInputChanged(self, var):
# run just before the signal is actually emitted
# just put "pass" if nothing should happen
self._last_input = var
@dbus.service.method(interface='com.example.Sample',
in_signature='', out_signature='v')
def GetLastInput(self):
return self._last_input
</pre>
<!-- ==================== INSTANCE METHODS ==================== -->
<a name="section-InstanceMethods"></a>
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="dbus.service.Object-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">conn</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">object_path</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">bus_name</span>=<span class="summary-sig-default">None</span>)</span><br />
Constructor. Either conn or bus_name is required; object_path
is also required.</td>
<td align="right" valign="top">
<span class="codelink"><a href="dbus.service-pysrc.html#Object.__init__">source code</a></span>
</td>
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</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="dbus.service.Object-class.html#add_to_connection" class="summary-sig-name">add_to_connection</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">connection</span>,
<span class="summary-sig-arg">path</span>)</span><br />
Make this object accessible via the given D-Bus connection and
object path.</td>
<td align="right" valign="top">
<span class="codelink"><a href="dbus.service-pysrc.html#Object.add_to_connection">source code</a></span>
</td>
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</td>
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<span class="summary-type"> </span>
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<tr>
<td><span class="summary-sig"><a href="dbus.service.Object-class.html#remove_from_connection" class="summary-sig-name">remove_from_connection</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">connection</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">path</span>=<span class="summary-sig-default">None</span>)</span><br />
Make this object inaccessible via the given D-Bus connection
and object path. If no connection or path is specified,
the object ceases to be accessible via any connection or path.</td>
<td align="right" valign="top">
<span class="codelink"><a href="dbus.service-pysrc.html#Object.remove_from_connection">source code</a></span>
</td>
</tr>
</table>
</td>
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<tr class="private">
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="_unregister_cb"></a><span class="summary-sig-name">_unregister_cb</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">connection</span>)</span></td>
<td align="right" valign="top">
<span class="codelink"><a href="dbus.service-pysrc.html#Object._unregister_cb">source code</a></span>
</td>
</tr>
</table>
</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="_message_cb"></a><span class="summary-sig-name">_message_cb</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">connection</span>,
<span class="summary-sig-arg">message</span>)</span></td>
<td align="right" valign="top">
<span class="codelink"><a href="dbus.service-pysrc.html#Object._message_cb">source code</a></span>
</td>
</tr>
</table>
</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
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<tr>
<td><span class="summary-sig"><a href="dbus.service.Object-class.html#Introspect" class="summary-sig-name">Introspect</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">object_path</span>,
<span class="summary-sig-arg">connection</span>)</span><br />
Return a string of XML encoding this object's supported interfaces,
methods and signals.</td>
<td align="right" valign="top">
<span class="codelink"><a href="dbus.service-pysrc.html#Object.Introspect">source code</a></span>
</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
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<tr>
<td><span class="summary-sig"><a href="dbus.service.Object-class.html#__repr__" class="summary-sig-name">__repr__</a>(<span class="summary-sig-arg">self</span>)</span><br />
str(x)</td>
<td align="right" valign="top">
<span class="codelink"><a href="dbus.service-pysrc.html#Object.__repr__">source code</a></span>
</td>
</tr>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
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<tr>
<td><span class="summary-sig"><a href="dbus.service.Object-class.html#__str__" class="summary-sig-name">__str__</a>(<span class="summary-sig-arg">self</span>)</span><br />
str(x)</td>
<td align="right" valign="top">
<span class="codelink"><a href="dbus.service-pysrc.html#Object.__repr__">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="2" class="summary">
<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__delattr__</code>,
<code>__format__</code>,
<code>__getattribute__</code>,
<code>__hash__</code>,
<code>__new__</code>,
<code>__reduce__</code>,
<code>__reduce_ex__</code>,
<code>__setattr__</code>,
<code>__sizeof__</code>,
<code>__subclasshook__</code>
</p>
</td>
</tr>
</table>
<!-- ==================== CLASS VARIABLES ==================== -->
<a name="section-ClassVariables"></a>
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cellspacing="0" width="100%" bgcolor="white">
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<tr valign="top">
<td align="left"><span class="table-header">Class Variables</span></td>
<td align="right" valign="top"
><span class="options">[<a href="#section-ClassVariables"
class="privatelink" onclick="toggle_private();"
>hide private</a>]</span></td>
</tr>
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</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="SUPPORTS_MULTIPLE_OBJECT_PATHS"></a><span class="summary-name">SUPPORTS_MULTIPLE_OBJECT_PATHS</span> = <code title="False">False</code><br />
If True, this object can be made available at more than one object path.
If True but <a href="dbus.service.Object-class.html#SUPPORTS_MULTIPLE_CONNECTIONS" class="link">SUPPORTS_MULTIPLE_CONNECTIONS</a> is False, the object may
handle more than one object path, but they must all be on the same
connection.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="SUPPORTS_MULTIPLE_CONNECTIONS"></a><span class="summary-name">SUPPORTS_MULTIPLE_CONNECTIONS</span> = <code title="False">False</code><br />
If True, this object can be made available on more than one connection.
If True but <a href="dbus.service.Object-class.html#SUPPORTS_MULTIPLE_OBJECT_PATHS" class="link">SUPPORTS_MULTIPLE_OBJECT_PATHS</a> is False, the object must
have the same object path on all its connections.
</td>
</tr>
<tr>
<td colspan="2" class="summary">
<div class="private"> <p class="indent-wrapped-lines"><b>Inherited from <code><a href="dbus.service.Interface-class.html">Interface</a></code></b> (private):
<code><a href="dbus.service.Interface-class.html#_dbus_class_table" onclick="show_private();">_dbus_class_table</a></code>
</p></div>
</td>
</tr>
</table>
<!-- ==================== INSTANCE VARIABLES ==================== -->
<a name="section-InstanceVariables"></a>
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<td align="left"><span class="table-header">Instance Variables</span></td>
<td align="right" valign="top"
><span class="options">[<a href="#section-InstanceVariables"
class="privatelink" onclick="toggle_private();"
>hide private</a>]</span></td>
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</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="_object_path"></a><span class="summary-name">_object_path</span><br />
Either an object path, None or _MANY
</td>
</tr>
<tr class="private">
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="_connection"></a><span class="summary-name">_connection</span><br />
Either a dbus.connection.Connection, None or _MANY
</td>
</tr>
<tr class="private">
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="_locations"></a><span class="summary-name">_locations</span><br />
A list of tuples (Connection, object path, False) where the False
is for future expansion (to support fallback paths)
</td>
</tr>
<tr class="private">
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="_locations_lock"></a><span class="summary-name">_locations_lock</span><br />
Lock protecting <a href="dbus.service.Object-class.html#_locations" class="link" onclick="show_private();">_locations</a>, <a href="dbus.service.Object-class.html#_connection" class="link" onclick="show_private();">_connection</a> and <a href="dbus.service.Object-class.html#_object_path" class="link" onclick="show_private();">_object_path</a>
</td>
</tr>
<tr class="private">
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="_fallback"></a><span class="summary-name">_fallback</span><br />
True if this is a fallback object handling a whole subtree.
</td>
</tr>
</table>
<!-- ==================== PROPERTIES ==================== -->
<a name="section-Properties"></a>
<table class="summary" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="table-header">
<td colspan="2" class="table-header">
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<tr valign="top">
<td align="left"><span class="table-header">Properties</span></td>
<td align="right" valign="top"
><span class="options">[<a href="#section-Properties"
class="privatelink" onclick="toggle_private();"
>hide private</a>]</span></td>
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</table>
</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="dbus.service.Object-class.html#__dbus_object_path__" class="summary-name">__dbus_object_path__</a><br />
The object-path at which this object is available.
Access raises AttributeError if there is no object path, or more than
one object path.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="dbus.service.Object-class.html#connection" class="summary-name">connection</a><br />
The Connection on which this object is available.
Access raises AttributeError if there is no Connection, or more than
one Connection.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="dbus.service.Object-class.html#locations" class="summary-name">locations</a><br />
An iterable over tuples representing locations at which this
object is available.
</td>
</tr>
<tr>
<td colspan="2" class="summary">
<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__class__</code>
</p>
</td>
</tr>
</table>
<!-- ==================== METHOD DETAILS ==================== -->
<a name="section-MethodDetails"></a>
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<td align="left"><span class="table-header">Method Details</span></td>
<td align="right" valign="top"
><span class="options">[<a href="#section-MethodDetails"
class="privatelink" onclick="toggle_private();"
>hide private</a>]</span></td>
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</td>
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<a name="__init__"></a>
<div>
<table class="details" border="1" cellpadding="3"
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<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">conn</span>=<span class="sig-default">None</span>,
<span class="sig-arg">object_path</span>=<span class="sig-default">None</span>,
<span class="sig-arg">bus_name</span>=<span class="sig-default">None</span>)</span>
<br /><em class="fname">(Constructor)</em>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="dbus.service-pysrc.html#Object.__init__">source code</a></span>
</td>
</tr></table>
Constructor. Either conn or bus_name is required; object_path
is also required.
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><p><strong class="pname"><code>conn</code></strong> (dbus.connection.Connection or None) - The connection on which to export this object.</p>
<p>If None, use the Bus associated with the given <tt class="rst-docutils literal">bus_name</tt>.
If there is no <tt class="rst-docutils literal">bus_name</tt> either, the object is not
initially available on any Connection.</p>
<p>For backwards compatibility, if an instance of
dbus.service.BusName is passed as the first parameter,
this is equivalent to passing its associated Bus as
<tt class="rst-docutils literal">conn</tt>, and passing the BusName itself as <tt class="rst-docutils literal">bus_name</tt>.</p></li>
<li><strong class="pname"><code>object_path</code></strong> (str or None) - A D-Bus object path at which to make this Object available
immediately. If this is not None, a <code class="link">conn</code> or <code class="link">bus_name</code> must
also be provided.</li>
<li><strong class="pname"><code>bus_name</code></strong> (dbus.service.BusName or None) - Represents a well-known name claimed by this process. A
reference to the BusName object will be held by this
Object, preventing the name from being released during this
Object's lifetime (unless it's released manually).</li>
</ul></dd>
<dt>Overrides:
object.__init__
</dt>
</dl>
</td></tr></table>
</div>
<a name="add_to_connection"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">add_to_connection</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">connection</span>,
<span class="sig-arg">path</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="dbus.service-pysrc.html#Object.add_to_connection">source code</a></span>
</td>
</tr></table>
Make this object accessible via the given D-Bus connection and
object path.
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>connection</code></strong> (dbus.connection.Connection) - Export the object on this connection. If the class attribute
SUPPORTS_MULTIPLE_CONNECTIONS is False (default), this object
can only be made available on one connection; if the class
attribute is set True by a subclass, the object can be made
available on more than one connection.</li>
<li><strong class="pname"><code>path</code></strong> (dbus.ObjectPath or other str) - Place the object at this object path. If the class attribute
SUPPORTS_MULTIPLE_OBJECT_PATHS is False (default), this object
can only be made available at one object path; if the class
attribute is set True by a subclass, the object can be made
available with more than one object path.</li>
</ul></dd>
<dt>Raises:</dt>
<dd><ul class="nomargin-top">
<li><code><strong class='fraise'>ValueError</strong></code> - if the object's class attributes do not allow the
object to be exported in the desired way.</li>
</ul></dd>
</dl>
<div class="fields"> <p><strong>Since:</strong>
0.82.0
</p>
</div></td></tr></table>
</div>
<a name="remove_from_connection"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">remove_from_connection</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">connection</span>=<span class="sig-default">None</span>,
<span class="sig-arg">path</span>=<span class="sig-default">None</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="dbus.service-pysrc.html#Object.remove_from_connection">source code</a></span>
</td>
</tr></table>
Make this object inaccessible via the given D-Bus connection
and object path. If no connection or path is specified,
the object ceases to be accessible via any connection or path.
<dl class="fields">
<dt>Parameters:</dt>
<dd><ul class="nomargin-top">
<li><strong class="pname"><code>connection</code></strong> (dbus.connection.Connection or None) - Only remove the object from this Connection. If None,
remove from all Connections on which it's exported.</li>
<li><strong class="pname"><code>path</code></strong> (dbus.ObjectPath or other str, or None) - Only remove the object from this object path. If None,
remove from all object paths.</li>
</ul></dd>
<dt>Raises:</dt>
<dd><ul class="nomargin-top">
<li><code><strong class='fraise'>LookupError</strong></code> - if the object was not exported on the requested connection
or path, or (if both are None) was not exported at all.</li>
</ul></dd>
</dl>
<div class="fields"> <p><strong>Since:</strong>
0.81.1
</p>
</div></td></tr></table>
</div>
<a name="Introspect"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">Introspect</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">object_path</span>,
<span class="sig-arg">connection</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="dbus.service-pysrc.html#Object.Introspect">source code</a></span>
</td>
</tr></table>
Return a string of XML encoding this object's supported interfaces,
methods and signals.
<dl class="fields">
<dt>Decorators:</dt>
<dd><ul class="nomargin-top">
<li><code>@method(INTROSPECTABLE_IFACE, in_signature= '', out_signature= 's', path_keyword= 'object_path', connection_keyword= 'connection')</code></li>
</ul></dd>
</dl>
</td></tr></table>
</div>
<a name="__repr__"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">__repr__</span>(<span class="sig-arg">self</span>)</span>
<br /><em class="fname">(Representation operator)</em>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="dbus.service-pysrc.html#Object.__repr__">source code</a></span>
</td>
</tr></table>
str(x)
<dl class="fields">
<dt>Overrides:
object.__repr__
<dd><em class="note">(inherited documentation)</em></dd>
</dt>
</dl>
</td></tr></table>
</div>
<a name="__str__"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">__str__</span>(<span class="sig-arg">self</span>)</span>
<br /><em class="fname">(Informal representation operator)</em>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="dbus.service-pysrc.html#Object.__repr__">source code</a></span>
</td>
</tr></table>
str(x)
<dl class="fields">
<dt>Overrides:
object.__str__
<dd><em class="note">(inherited documentation)</em></dd>
</dt>
</dl>
</td></tr></table>
</div>
<br />
<!-- ==================== PROPERTY DETAILS ==================== -->
<a name="section-PropertyDetails"></a>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="table-header">
<td colspan="2" class="table-header">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr valign="top">
<td align="left"><span class="table-header">Property Details</span></td>
<td align="right" valign="top"
><span class="options">[<a href="#section-PropertyDetails"
class="privatelink" onclick="toggle_private();"
>hide private</a>]</span></td>
</tr>
</table>
</td>
</tr>
</table>
<a name="__dbus_object_path__"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<h3 class="epydoc">__dbus_object_path__</h3>
<p>The object-path at which this object is available.
Access raises AttributeError if there is no object path, or more than
one object path.</p>
<p>Changed in 0.82.0: AttributeError can be raised.</p>
<dl class="fields">
<dt>Get Method:</dt>
<dd class="value"><span class="summary-sig"><i>unreachable</i>.__dbus_object_path__(<span class="summary-sig-arg">self</span>)</span>
- The object-path at which this object is available.
Access raises AttributeError if there is no object path, or more than
one object path.
</dd>
</dl>
</td></tr></table>
</div>
<a name="connection"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<h3 class="epydoc">connection</h3>
<p>The Connection on which this object is available.
Access raises AttributeError if there is no Connection, or more than
one Connection.</p>
<p>Changed in 0.82.0: AttributeError can be raised.</p>
<dl class="fields">
<dt>Get Method:</dt>
<dd class="value"><span class="summary-sig"><i>unreachable</i>.connection(<span class="summary-sig-arg">self</span>)</span>
- The Connection on which this object is available.
Access raises AttributeError if there is no Connection, or more than
one Connection.
</dd>
</dl>
</td></tr></table>
</div>
<a name="locations"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<h3 class="epydoc">locations</h3>
<p>An iterable over tuples representing locations at which this
object is available.</p>
<p>Each tuple has at least two items, but may have more in future
versions of dbus-python, so do not rely on their exact length.
The first two items are the dbus.connection.Connection and the object
path.</p>
<dl class="fields">
<dt>Get Method:</dt>
<dd class="value"><span class="summary-sig"><i>unreachable</i>.locations(<span class="summary-sig-arg">self</span>)</span>
- An iterable over tuples representing locations at which this
object is available.
</dd>
</dl>
<div class="fields"> <p><strong>Since:</strong>
0.82.0
</p>
</div></td></tr></table>
</div>
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