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<a href="configobj-module.html">Module configobj</a> ::
Class InterpolationEngine
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class InterpolationEngine</h1><p class="nomargin-top"><span class="codelink"><a href="configobj-pysrc.html#InterpolationEngine">source code</a></span></p>
<pre class="base-tree">
object --+
|
<strong class="uidshort">InterpolationEngine</strong>
</pre>
<dl><dt>Known Subclasses:</dt>
<dd>
<ul class="subclass-list">
<li class="private"><a href="configobj.ConfigParserInterpolation-class.html" onclick="show_private();">ConfigParserInterpolation</a></li><li class="private">, <a href="configobj.TemplateInterpolation-class.html" onclick="show_private();">TemplateInterpolation</a></li> </ul>
</dd></dl>
<hr />
<p>A helper class to help perform string interpolation.</p>
<p>This class is an abstract base class; its descendants perform the
actual work.</p>
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<td><span class="summary-sig"><a href="configobj.InterpolationEngine-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">section</span>)</span><br />
x.__init__(...) initializes x; see help(type(x)) for signature</td>
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<span class="codelink"><a href="configobj-pysrc.html#InterpolationEngine.__init__">source code</a></span>
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a name="interpolate"></a><span class="summary-sig-name">interpolate</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">key</span>,
<span class="summary-sig-arg">value</span>)</span></td>
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<span class="codelink"><a href="configobj-pysrc.html#InterpolationEngine.interpolate">source code</a></span>
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="configobj.InterpolationEngine-class.html#_fetch" class="summary-sig-name" onclick="show_private();">_fetch</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">key</span>)</span><br />
Helper function to fetch values from owning section.</td>
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<span class="codelink"><a href="configobj-pysrc.html#InterpolationEngine._fetch">source code</a></span>
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<td><span class="summary-sig"><a href="configobj.InterpolationEngine-class.html#_parse_match" class="summary-sig-name" onclick="show_private();">_parse_match</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">match</span>)</span><br />
Implementation-dependent helper function.</td>
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<span class="codelink"><a href="configobj-pysrc.html#InterpolationEngine._parse_match">source code</a></span>
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<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>
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<span class="summary-type"> </span>
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<a name="_KEYCRE"></a><span class="summary-name">_KEYCRE</span> = <code title="re.compile(r'%\(([^\)]*)\)s')">re.compile(r'%\(<code class="re-group">(</code><code class="re-group">[^</code>\)<code class="re-group">]</code><code class="re-op">*</code><code class="re-group">)</code>\)s')</code>
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<span class="summary-type"> </span>
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<a name="_cookie"></a><span class="summary-name">_cookie</span> = <code title="'%'"><code class="variable-quote">'</code><code class="variable-string">%</code><code class="variable-quote">'</code></code>
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<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__class__</code>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">section</span>)</span>
<br /><em class="fname">(Constructor)</em>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="configobj-pysrc.html#InterpolationEngine.__init__">source code</a></span>
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<p>x.__init__(...) initializes x; see help(type(x)) for signature</p>
<dl class="fields">
<dt>Overrides:
object.__init__
<dd><em class="note">(inherited documentation)</em></dd>
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<a name="_fetch"></a>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">_fetch</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">key</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="configobj-pysrc.html#InterpolationEngine._fetch">source code</a></span>
</td>
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<p>Helper function to fetch values from owning section.</p>
<p>Returns a 2-tuple: the value, and the section where it was found.</p>
<dl class="fields">
</dl>
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<a name="_parse_match"></a>
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<h3 class="epydoc"><span class="sig"><span class="sig-name">_parse_match</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">match</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="configobj-pysrc.html#InterpolationEngine._parse_match">source code</a></span>
</td>
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<p>Implementation-dependent helper function.</p>
<p>Will be passed a match object corresponding to the interpolation key
we just found (e.g., "%(foo)s" or "$foo"). Should
look up that key in the appropriate config file section (using the
``_fetch()`` helper function) and return a 3-tuple: (key, value,
section)</p>
<p>``key`` is the name of the key we're looking for ``value`` is the
value found for that key ``section`` is a reference to the section where
it was found</p>
<p>``key`` and ``section`` should be None if no further interpolation
should be performed on the resulting value (e.g., if we interpolated
"$$" and returned "$").</p>
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