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<div class="section" id="module-airflow.models.param">
<span id="airflow-models-param"></span><h1><a class="reference internal" href="#module-airflow.models.param" title="airflow.models.param"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.models.param</span></code></a><a class="headerlink" href="#module-airflow.models.param" title="Permalink to this headline"></a></h1>
<div class="section" id="module-contents">
<h2>Module Contents<a class="headerlink" href="#module-contents" title="Permalink to this headline"></a></h2>
<div class="section" id="classes">
<h3>Classes<a class="headerlink" href="#classes" title="Permalink to this headline"></a></h3>
<table class="longtable docutils align-default">
<colgroup>
<col style="width: 10%" />
<col style="width: 90%" />
</colgroup>
<tbody>
<tr class="row-odd"><td><p><a class="reference internal" href="#airflow.models.param.NoValueSentinel" title="airflow.models.param.NoValueSentinel"><code class="xref py py-obj docutils literal notranslate"><span class="pre">NoValueSentinel</span></code></a></p></td>
<td><p>Sentinel class used to distinguish between None and no passed value</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#airflow.models.param.Param" title="airflow.models.param.Param"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Param</span></code></a></p></td>
<td><p>Class to hold the default value of a Param and rule set to do the validations. Without the rule set</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#airflow.models.param.ParamsDict" title="airflow.models.param.ParamsDict"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ParamsDict</span></code></a></p></td>
<td><p>Class to hold all params for dags or tasks. All the keys are strictly string and values</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#airflow.models.param.DagParam" title="airflow.models.param.DagParam"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DagParam</span></code></a></p></td>
<td><p>Class that represents a DAG run parameter &amp; binds a simple Param object to a name within a DAG instance,</p></td>
</tr>
</tbody>
</table>
<dl class="py class">
<dt class="sig sig-object py" id="airflow.models.param.NoValueSentinel">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">airflow.models.param.</span></span><span class="sig-name descname"><span class="pre">NoValueSentinel</span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#NoValueSentinel"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.NoValueSentinel" title="Permalink to this definition"></a></dt>
<dd><p>Sentinel class used to distinguish between None and no passed value</p>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.NoValueSentinel.__str__">
<span class="sig-name descname"><span class="pre">__str__</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#NoValueSentinel.__str__"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.NoValueSentinel.__str__" title="Permalink to this definition"></a></dt>
<dd><p>Return str(self).</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.NoValueSentinel.__repr__">
<span class="sig-name descname"><span class="pre">__repr__</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#NoValueSentinel.__repr__"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.NoValueSentinel.__repr__" title="Permalink to this definition"></a></dt>
<dd><p>Return repr(self).</p>
</dd></dl>
</dd></dl>
<dl class="py class">
<dt class="sig sig-object py" id="airflow.models.param.Param">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">airflow.models.param.</span></span><span class="sig-name descname"><span class="pre">Param</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">default</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Any</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">__NO_VALUE_SENTINEL</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">description</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.10)"><span class="pre">str</span></a></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="o"><span class="pre">**</span></span><span class="n"><span class="pre">kwargs</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#Param"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.Param" title="Permalink to this definition"></a></dt>
<dd><p>Class to hold the default value of a Param and rule set to do the validations. Without the rule set
it always validates and returns the default value.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>default</strong> (<em>Any</em>) -- The value this Param object holds</p></li>
<li><p><strong>description</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.10)"><em>str</em></a>) -- Optional help text for the Param</p></li>
<li><p><strong>schema</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#dict" title="(in Python v3.10)"><em>dict</em></a>) -- The validation schema of the Param, if not given then all kwargs except
default &amp; description will form the schema</p></li>
</ul>
</dd>
</dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="airflow.models.param.Param.CLASS_IDENTIFIER">
<span class="sig-name descname"><span class="pre">CLASS_IDENTIFIER</span></span><em class="property"><span class="w"> </span><span class="pre">=</span> <span class="pre">__class</span></em><a class="reference internal" href="../../../../_modules/airflow/models/param.html#Param.CLASS_IDENTIFIER"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.Param.CLASS_IDENTIFIER" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.Param.resolve">
<span class="sig-name descname"><span class="pre">resolve</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">value</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Optional</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">__NO_VALUE_SENTINEL</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">suppress_exception</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/functions.html#bool" title="(in Python v3.10)"><span class="pre">bool</span></a></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">False</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">Any</span></span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#Param.resolve"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.Param.resolve" title="Permalink to this definition"></a></dt>
<dd><p>Runs the validations and returns the Param's final value.
May raise ValueError on failed validations, or TypeError
if no value is passed and no value already exists.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>value</strong> (<em>Optional</em><em>[</em><em>Any</em><em>]</em>) -- The value to be updated for the Param</p></li>
<li><p><strong>suppress_exception</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#bool" title="(in Python v3.10)"><em>bool</em></a>) -- To raise an exception or not when the validations fails.
If true and validations fails, the return value would be None.</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.Param.dump">
<span class="sig-name descname"><span class="pre">dump</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#dict" title="(in Python v3.10)"><span class="pre">dict</span></a></span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#Param.dump"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.Param.dump" title="Permalink to this definition"></a></dt>
<dd><p>Dump the Param as a dictionary</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.Param.has_value">
<em class="property"><span class="pre">property</span><span class="w"> </span></em><span class="sig-name descname"><span class="pre">has_value</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><a class="reference external" href="https://docs.python.org/3/library/functions.html#bool" title="(in Python v3.10)"><span class="pre">bool</span></a></span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#Param.has_value"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.Param.has_value" title="Permalink to this definition"></a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="py class">
<dt class="sig sig-object py" id="airflow.models.param.ParamsDict">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">airflow.models.param.</span></span><span class="sig-name descname"><span class="pre">ParamsDict</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">dict_obj</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Optional</span><span class="p"><span class="pre">[</span></span><span class="pre">Dict</span><span class="p"><span class="pre">]</span></span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">suppress_exception</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/functions.html#bool" title="(in Python v3.10)"><span class="pre">bool</span></a></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">False</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#ParamsDict"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.ParamsDict" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference external" href="https://jinja.palletsprojects.com/en/2.11.x/templates/#dict" title="(in Jinja v2.11.x)"><code class="xref py py-obj docutils literal notranslate"><span class="pre">dict</span></code></a></p>
<p>Class to hold all params for dags or tasks. All the keys are strictly string and values
are converted into Param's object if they are not already. This class is to replace param's
dictionary implicitly and ideally not needed to be used directly.</p>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.ParamsDict.__setitem__">
<span class="sig-name descname"><span class="pre">__setitem__</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">key</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.10)"><span class="pre">str</span></a></span></em>, <em class="sig-param"><span class="n"><span class="pre">value</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Any</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><a class="reference external" href="https://docs.python.org/3/library/constants.html#None" title="(in Python v3.10)"><span class="pre">None</span></a></span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#ParamsDict.__setitem__"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.ParamsDict.__setitem__" title="Permalink to this definition"></a></dt>
<dd><p>Override for dictionary's <code class="docutils literal notranslate"><span class="pre">setitem</span></code> method. This method make sure that all values are of
Param's type only.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>key</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.10)"><em>str</em></a>) -- A key which needs to be inserted or updated in the dict</p></li>
<li><p><strong>value</strong> (<em>Any</em>) -- A value which needs to be set against the key. It could be of any
type but will be converted and stored as a Param object eventually.</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.ParamsDict.__getitem__">
<span class="sig-name descname"><span class="pre">__getitem__</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">key</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.10)"><span class="pre">str</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">Any</span></span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#ParamsDict.__getitem__"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.ParamsDict.__getitem__" title="Permalink to this definition"></a></dt>
<dd><p>Override for dictionary's <code class="docutils literal notranslate"><span class="pre">getitem</span></code> method. After fetching the key, it would call the
resolve method as well on the Param object.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><p><strong>key</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.10)"><em>str</em></a>) -- The key to fetch</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.ParamsDict.dump">
<span class="sig-name descname"><span class="pre">dump</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#dict" title="(in Python v3.10)"><span class="pre">dict</span></a></span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#ParamsDict.dump"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.ParamsDict.dump" title="Permalink to this definition"></a></dt>
<dd><p>Dumps the ParamsDict object as a dictionary, while suppressing exceptions</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.ParamsDict.update">
<span class="sig-name descname"><span class="pre">update</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">other_dict</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#dict" title="(in Python v3.10)"><span class="pre">dict</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><a class="reference external" href="https://docs.python.org/3/library/constants.html#None" title="(in Python v3.10)"><span class="pre">None</span></a></span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#ParamsDict.update"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.ParamsDict.update" title="Permalink to this definition"></a></dt>
<dd><p>Override for dictionary's update method.
:param other_dict: A dict type object which needs to be merged in the ParamsDict object
:type other_dict: dict</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.ParamsDict.validate">
<span class="sig-name descname"><span class="pre">validate</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#dict" title="(in Python v3.10)"><span class="pre">dict</span></a></span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#ParamsDict.validate"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.ParamsDict.validate" title="Permalink to this definition"></a></dt>
<dd><p>Validates &amp; returns all the Params object stored in the dictionary</p>
</dd></dl>
</dd></dl>
<dl class="py class">
<dt class="sig sig-object py" id="airflow.models.param.DagParam">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">airflow.models.param.</span></span><span class="sig-name descname"><span class="pre">DagParam</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">current_dag</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">name</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.10)"><span class="pre">str</span></a></span></em>, <em class="sig-param"><span class="n"><span class="pre">default</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Optional</span><span class="p"><span class="pre">[</span></span><span class="pre">Any</span><span class="p"><span class="pre">]</span></span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#DagParam"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.DagParam" title="Permalink to this definition"></a></dt>
<dd><p>Class that represents a DAG run parameter &amp; binds a simple Param object to a name within a DAG instance,
so that it can be resolved during the run time via <code class="docutils literal notranslate"><span class="pre">{{</span> <span class="pre">context</span> <span class="pre">}}</span></code> dictionary. The ideal use case of
this class is to implicitly convert args passed to a method which is being decorated by <code class="docutils literal notranslate"><span class="pre">&#64;dag</span></code> keyword.</p>
<p>It can be used to parameterize your dags. You can overwrite its value by setting it on conf
when you trigger your DagRun.</p>
<p>This can also be used in templates by accessing <code class="docutils literal notranslate"><span class="pre">{{context.params}}</span></code> dictionary.</p>
<p><strong>Example</strong>:</p>
<blockquote>
<div><dl class="simple">
<dt>with DAG(...) as dag:</dt><dd><p>EmailOperator(subject=dag.param('subject', 'Hi from Airflow!'))</p>
</dd>
</dl>
</div></blockquote>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>current_dag</strong> (<em>airflow.models.DAG</em>) -- Dag being used for parameter.</p></li>
<li><p><strong>name</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.10)"><em>str</em></a>) -- key value which is used to set the parameter</p></li>
<li><p><strong>default</strong> (<em>Any</em>) -- Default value used if no parameter was set.</p></li>
</ul>
</dd>
</dl>
<dl class="py method">
<dt class="sig sig-object py" id="airflow.models.param.DagParam.resolve">
<span class="sig-name descname"><span class="pre">resolve</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">context</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">airflow.utils.context.Context</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typehint"><span class="pre">Any</span></span></span><a class="reference internal" href="../../../../_modules/airflow/models/param.html#DagParam.resolve"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#airflow.models.param.DagParam.resolve" title="Permalink to this definition"></a></dt>
<dd><p>Pull DagParam value from DagRun context. This method is run during <code class="docutils literal notranslate"><span class="pre">op.execute()</span></code>.</p>
</dd></dl>
</dd></dl>
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<li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.models.param</span></code></a><ul>
<li><a class="reference internal" href="#module-contents">Module Contents</a><ul>
<li><a class="reference internal" href="#classes">Classes</a><ul>
<li><a class="reference internal" href="#airflow.models.param.NoValueSentinel">NoValueSentinel</a><ul>
<li><a class="reference internal" href="#airflow.models.param.NoValueSentinel.__str__">__str__</a></li>
<li><a class="reference internal" href="#airflow.models.param.NoValueSentinel.__repr__">__repr__</a></li>
</ul>
</li>
<li><a class="reference internal" href="#airflow.models.param.Param">Param</a><ul>
<li><a class="reference internal" href="#airflow.models.param.Param.CLASS_IDENTIFIER">CLASS_IDENTIFIER</a></li>
<li><a class="reference internal" href="#airflow.models.param.Param.resolve">resolve</a></li>
<li><a class="reference internal" href="#airflow.models.param.Param.dump">dump</a></li>
<li><a class="reference internal" href="#airflow.models.param.Param.has_value">has_value</a></li>
</ul>
</li>
<li><a class="reference internal" href="#airflow.models.param.ParamsDict">ParamsDict</a><ul>
<li><a class="reference internal" href="#airflow.models.param.ParamsDict.__setitem__">__setitem__</a></li>
<li><a class="reference internal" href="#airflow.models.param.ParamsDict.__getitem__">__getitem__</a></li>
<li><a class="reference internal" href="#airflow.models.param.ParamsDict.dump">dump</a></li>
<li><a class="reference internal" href="#airflow.models.param.ParamsDict.update">update</a></li>
<li><a class="reference internal" href="#airflow.models.param.ParamsDict.validate">validate</a></li>
</ul>
</li>
<li><a class="reference internal" href="#airflow.models.param.DagParam">DagParam</a><ul>
<li><a class="reference internal" href="#airflow.models.param.DagParam.resolve">resolve</a></li>
</ul>
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