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+  <title>oauth2client.gce.AppAssertionCredentials</title>
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+        <a href="oauth2client-module.html">Package&nbsp;oauth2client</a> ::
+        <a href="oauth2client.gce-module.html">Module&nbsp;gce</a> ::
+        Class&nbsp;AppAssertionCredentials
+      </span>
+    </td>
+    <td>
+      <table cellpadding="0" cellspacing="0">
+        <!-- hide/show private -->
+        <tr><td align="right"><span class="options">[<a href="javascript:void(0);" class="privatelink"
+    onclick="toggle_private();">hide&nbsp;private</a>]</span></td></tr>
+        <tr><td align="right"><span class="options"
+            >[<a href="frames.html" target="_top">frames</a
+            >]&nbsp;|&nbsp;<a href="oauth2client.gce.AppAssertionCredentials-class.html"
+            target="_top">no&nbsp;frames</a>]</span></td></tr>
+      </table>
+    </td>
+  </tr>
+</table>
+<!-- ==================== CLASS DESCRIPTION ==================== -->
+<h1 class="epydoc">Class AppAssertionCredentials</h1><p class="nomargin-top"><span class="codelink"><a href="oauth2client.gce-pysrc.html#AppAssertionCredentials">source&nbsp;code</a></span></p>
+<center>
+<center>  <map id="class_hierarchy_for_appasserti_2" name="class_hierarchy_for_appasserti_2">
+<area shape="rect" href="oauth2client.client.AssertionCredentials-class.html" title="client.AssertionCredentials" alt="" coords="5,117,181,144"/>
+<area shape="rect" href="oauth2client.gce.AppAssertionCredentials-class.html" title="AppAssertionCredentials" alt="" coords="12,173,175,200"/>
+<area shape="rect" href="oauth2client.client.Credentials-class.html" title="client.Credentials" alt="" coords="33,5,153,32"/>
+<area shape="rect" href="oauth2client.client.OAuth2Credentials-class.html" title="client.OAuth2Credentials" alt="" coords="11,61,176,88"/>
+</map>
+  <img src="class_hierarchy_for_appasserti_2.gif" alt='' usemap="#class_hierarchy_for_appasserti_2" ismap="ismap" class="graph-without-title" />
+</center>
+</center>
+<hr />
+<pre class="literalblock">
+Credentials object for Compute Engine Assertion Grants
+
+This object will allow a Compute Engine instance to identify itself to
+Google and other OAuth 2.0 servers that can verify assertions. It can be used
+for the purpose of accessing data stored under an account assigned to the
+Compute Engine instance itself.
+
+This credential does not require a flow to instantiate because it represents
+a two legged flow, and therefore has all of the required information to
+generate and refresh its own access tokens.
+
+</pre>
+
+<!-- ==================== INSTANCE METHODS ==================== -->
+<a name="section-InstanceMethods"></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">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <tr valign="top">
+        <td align="left"><span class="table-header">Instance Methods</span></td>
+        <td align="right" valign="top"
+         ><span class="options">[<a href="#section-InstanceMethods"
+         class="privatelink" onclick="toggle_private();"
+         >hide private</a>]</span></td>
+      </tr>
+    </table>
+  </td>
+</tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.gce.AppAssertionCredentials-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">*args</span>,
+        <span class="summary-sig-arg">**kwargs</span>)</span><br />
+      Constructor for AppAssertionCredentials</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.util-pysrc.html">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+<tr class="private">
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.gce.AppAssertionCredentials-class.html#_refresh" class="summary-sig-name" onclick="show_private();">_refresh</a>(<span class="summary-sig-arg">self</span>,
+        <span class="summary-sig-arg">http_request</span>)</span><br />
+      Refreshes the access_token.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.gce-pysrc.html#AppAssertionCredentials._refresh">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+  <tr>
+    <td colspan="2" class="summary">
+    <div class="private">    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.AssertionCredentials-class.html">client.AssertionCredentials</a></code></b> (private):
+      <code><a href="oauth2client.client.AssertionCredentials-class.html#_generate_assertion" onclick="show_private();">_generate_assertion</a></code>,
+      <code><a href="oauth2client.client.AssertionCredentials-class.html#_generate_refresh_request_body" onclick="show_private();">_generate_refresh_request_body</a></code>
+      </p></div>
+    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.OAuth2Credentials-class.html">client.OAuth2Credentials</a></code></b>:
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#__getstate__">__getstate__</a></code>,
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#__setstate__">__setstate__</a></code>,
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#apply">apply</a></code>,
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#authorize">authorize</a></code>,
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#refresh">refresh</a></code>,
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#set_store">set_store</a></code>,
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#to_json">to_json</a></code>
+      </p>
+    <div class="private">    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.OAuth2Credentials-class.html">client.OAuth2Credentials</a></code></b> (private):
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#_do_refresh_request" onclick="show_private();">_do_refresh_request</a></code>,
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#_generate_refresh_request_headers" onclick="show_private();">_generate_refresh_request_headers</a></code>,
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#_updateFromCredential" onclick="show_private();">_updateFromCredential</a></code>
+      </p></div>
+    <div class="private">    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.Credentials-class.html">client.Credentials</a></code></b> (private):
+      <code><a href="oauth2client.client.Credentials-class.html#_to_json" onclick="show_private();">_to_json</a></code>
+      </p></div>
+    <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>__repr__</code>,
+      <code>__setattr__</code>,
+      <code>__sizeof__</code>,
+      <code>__str__</code>,
+      <code>__subclasshook__</code>
+      </p>
+    </td>
+  </tr>
+</table>
+<!-- ==================== CLASS METHODS ==================== -->
+<a name="section-ClassMethods"></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">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <tr valign="top">
+        <td align="left"><span class="table-header">Class Methods</span></td>
+        <td align="right" valign="top"
+         ><span class="options">[<a href="#section-ClassMethods"
+         class="privatelink" onclick="toggle_private();"
+         >hide private</a>]</span></td>
+      </tr>
+    </table>
+  </td>
+</tr>
+<tr>
+    <td width="15%" align="right" valign="top" class="summary">
+      <span class="summary-type">&nbsp;</span>
+    </td><td class="summary">
+      <table width="100%" cellpadding="0" cellspacing="0" border="0">
+        <tr>
+          <td><span class="summary-sig"><a href="oauth2client.gce.AppAssertionCredentials-class.html#from_json" class="summary-sig-name">from_json</a>(<span class="summary-sig-arg">cls</span>,
+        <span class="summary-sig-arg">json</span>)</span><br />
+      Instantiate a Credentials object from a JSON description of it.</td>
+          <td align="right" valign="top">
+            <span class="codelink"><a href="oauth2client.gce-pysrc.html#AppAssertionCredentials.from_json">source&nbsp;code</a></span>
+            
+          </td>
+        </tr>
+      </table>
+      
+    </td>
+  </tr>
+  <tr>
+    <td colspan="2" class="summary">
+    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.Credentials-class.html">client.Credentials</a></code></b>:
+      <code><a href="oauth2client.client.Credentials-class.html#new_from_json">new_from_json</a></code>
+      </p>
+    </td>
+  </tr>
+</table>
+<!-- ==================== CLASS VARIABLES ==================== -->
+<a name="section-ClassVariables"></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">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <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>
+    </table>
+  </td>
+</tr>
+  <tr>
+    <td colspan="2" class="summary">
+    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.Credentials-class.html">client.Credentials</a></code></b>:
+      <code><a href="oauth2client.client.Credentials-class.html#NON_SERIALIZED_MEMBERS">NON_SERIALIZED_MEMBERS</a></code>
+      </p>
+    </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">
+    <table border="0" cellpadding="0" cellspacing="0" width="100%">
+      <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>
+      </tr>
+    </table>
+  </td>
+</tr>
+  <tr>
+    <td colspan="2" class="summary">
+    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="oauth2client.client.OAuth2Credentials-class.html">client.OAuth2Credentials</a></code></b>:
+      <code><a href="oauth2client.client.OAuth2Credentials-class.html#access_token_expired">access_token_expired</a></code>
+      </p>
+    <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>
+<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">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>
+      </tr>
+    </table>
+  </td>
+</tr>
+</table>
+<a name="__init__"></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">__init__</span>(<span class="sig-arg">*args</span>,
+        <span class="sig-arg">**kwargs</span>)</span>
+    <br /><em class="fname">(Constructor)</em>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.util-pysrc.html">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Constructor for AppAssertionCredentials
+
+Args:
+  scope: string or list of strings, scope(s) of the credentials being
+    requested.
+
+</pre>
+  <dl class="fields">
+    <dt>Decorators:</dt>
+    <dd><ul class="nomargin-top">
+        <li><code>@util.positional(2)</code></li>
+    </ul></dd>
+    <dt>Overrides:
+        object.__init__
+    </dt>
+  </dl>
+</td></tr></table>
+</div>
+<a name="from_json"></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">from_json</span>(<span class="sig-arg">cls</span>,
+        <span class="sig-arg">json</span>)</span>
+    <br /><em class="fname">Class Method</em>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.gce-pysrc.html#AppAssertionCredentials.from_json">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Instantiate a Credentials object from a JSON description of it. The JSON
+should have been produced by calling .to_json() on the object.
+
+Args:
+  data: dict, A deserialized JSON object.
+
+Returns:
+  An instance of a Credentials subclass.
+
+</pre>
+  <dl class="fields">
+    <dt>Overrides:
+        <a href="oauth2client.client.Credentials-class.html#from_json">client.Credentials.from_json</a>
+        <dd><em class="note">(inherited documentation)</em></dd>
+    </dt>
+  </dl>
+</td></tr></table>
+</div>
+<a name="_refresh"></a>
+<div class="private">
+<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">_refresh</span>(<span class="sig-arg">self</span>,
+        <span class="sig-arg">http_request</span>)</span>
+  </h3>
+  </td><td align="right" valign="top"
+    ><span class="codelink"><a href="oauth2client.gce-pysrc.html#AppAssertionCredentials._refresh">source&nbsp;code</a></span>&nbsp;
+    </td>
+  </tr></table>
+  
+  <pre class="literalblock">
+Refreshes the access_token.
+
+Skip all the storage hoops and just refresh using the API.
+
+Args:
+  http_request: callable, a callable that matches the method signature of
+    httplib2.Http.request, used to make the refresh request.
+
+Raises:
+  AccessTokenRefreshError: When the refresh fails.
+
+</pre>
+  <dl class="fields">
+    <dt>Overrides:
+        <a href="oauth2client.client.OAuth2Credentials-class.html#_refresh" onclick="show_private();">client.OAuth2Credentials._refresh</a>
+    </dt>
+  </dl>
+</td></tr></table>
+</div>
+<br />
+<!-- ==================== NAVIGATION BAR ==================== -->
+<table class="navbar" border="0" width="100%" cellpadding="0"
+       bgcolor="#a0c0ff" cellspacing="0">
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+
+  <!-- Tree link -->
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+        href="module-tree.html">Trees</a>&nbsp;&nbsp;&nbsp;</th>
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+        href="identifier-index.html">Indices</a>&nbsp;&nbsp;&nbsp;</th>
+
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+        href="help.html">Help</a>&nbsp;&nbsp;&nbsp;</th>
+
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