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| <div class="section" id="pyarrow-field"> |
| <h1>pyarrow.Field<a class="headerlink" href="#pyarrow-field" title="Permalink to this headline">¶</a></h1> |
| <dl class="py class"> |
| <dt id="pyarrow.Field"> |
| <em class="property">class </em><code class="sig-prename descclassname">pyarrow.</code><code class="sig-name descname">Field</code><a class="headerlink" href="#pyarrow.Field" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">pyarrow.lib._Weakrefable</span></code></p> |
| <p>A named field, with a data type, nullability, and optional metadata.</p> |
| <p class="rubric">Notes</p> |
| <p>Do not use this class’s constructor directly; use pyarrow.field</p> |
| <dl class="py method"> |
| <dt id="pyarrow.Field.__init__"> |
| <code class="sig-name descname">__init__</code><span class="sig-paren">(</span><em class="sig-param"><span class="o">*</span><span class="n">args</span></em>, <em class="sig-param"><span class="o">**</span><span class="n">kwargs</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.Field.__init__" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Initialize self. See help(type(self)) for accurate signature.</p> |
| </dd></dl> |
| |
| <p class="rubric">Methods</p> |
| <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="#pyarrow.Field.__init__" title="pyarrow.Field.__init__"><code class="xref py py-obj docutils literal notranslate"><span class="pre">__init__</span></code></a>(*args, **kwargs)</p></td> |
| <td><p>Initialize self.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.Field.add_metadata" title="pyarrow.Field.add_metadata"><code class="xref py py-obj docutils literal notranslate"><span class="pre">add_metadata</span></code></a>(self, metadata)</p></td> |
| <td><p></p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.Field.equals" title="pyarrow.Field.equals"><code class="xref py py-obj docutils literal notranslate"><span class="pre">equals</span></code></a>(self, Field other, …)</p></td> |
| <td><p>Test if this field is equal to the other</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.Field.flatten" title="pyarrow.Field.flatten"><code class="xref py py-obj docutils literal notranslate"><span class="pre">flatten</span></code></a>(self)</p></td> |
| <td><p>Flatten this field.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.Field.remove_metadata" title="pyarrow.Field.remove_metadata"><code class="xref py py-obj docutils literal notranslate"><span class="pre">remove_metadata</span></code></a>(self)</p></td> |
| <td><p>Create new field without metadata, if any</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.Field.with_metadata" title="pyarrow.Field.with_metadata"><code class="xref py py-obj docutils literal notranslate"><span class="pre">with_metadata</span></code></a>(self, metadata)</p></td> |
| <td><p>Add metadata as dict of string keys and values to Field</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.Field.with_name" title="pyarrow.Field.with_name"><code class="xref py py-obj docutils literal notranslate"><span class="pre">with_name</span></code></a>(self, name)</p></td> |
| <td><p>A copy of this field with the replaced name</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.Field.with_nullable" title="pyarrow.Field.with_nullable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">with_nullable</span></code></a>(self, nullable)</p></td> |
| <td><p>A copy of this field with the replaced nullability</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.Field.with_type" title="pyarrow.Field.with_type"><code class="xref py py-obj docutils literal notranslate"><span class="pre">with_type</span></code></a>(self, DataType new_type)</p></td> |
| <td><p>A copy of this field with the replaced type</p></td> |
| </tr> |
| </tbody> |
| </table> |
| <p class="rubric">Attributes</p> |
| <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="#pyarrow.Field.metadata" title="pyarrow.Field.metadata"><code class="xref py py-obj docutils literal notranslate"><span class="pre">metadata</span></code></a></p></td> |
| <td><p></p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.Field.name" title="pyarrow.Field.name"><code class="xref py py-obj docutils literal notranslate"><span class="pre">name</span></code></a></p></td> |
| <td><p></p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="#pyarrow.Field.nullable" title="pyarrow.Field.nullable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">nullable</span></code></a></p></td> |
| <td><p></p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="#pyarrow.Field.type" title="pyarrow.Field.type"><code class="xref py py-obj docutils literal notranslate"><span class="pre">type</span></code></a></p></td> |
| <td><p></p></td> |
| </tr> |
| </tbody> |
| </table> |
| <dl class="py method"> |
| <dt id="pyarrow.Field.add_metadata"> |
| <code class="sig-name descname">add_metadata</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em>, <em class="sig-param"><span class="n">metadata</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.Field.add_metadata" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.Field.equals"> |
| <code class="sig-name descname">equals</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">Field other</em>, <em class="sig-param">bool check_metadata=False</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.Field.equals" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Test if this field is equal to the other</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>other</strong> (<a class="reference internal" href="#pyarrow.Field" title="pyarrow.Field"><em>pyarrow.Field</em></a>) – </p></li> |
| <li><p><strong>check_metadata</strong> (<em>bool</em><em>, </em><em>default False</em>) – Whether Field metadata equality should be checked as well.</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><strong>is_equal</strong> (<em>bool</em>)</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.Field.flatten"> |
| <code class="sig-name descname">flatten</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.Field.flatten" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Flatten this field. If a struct field, individual child fields |
| will be returned with their names prefixed by the parent’s name.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p><strong>fields</strong> (<em>List[pyarrow.Field]</em>)</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py attribute"> |
| <dt id="pyarrow.Field.metadata"> |
| <code class="sig-name descname">metadata</code><a class="headerlink" href="#pyarrow.Field.metadata" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py attribute"> |
| <dt id="pyarrow.Field.name"> |
| <code class="sig-name descname">name</code><a class="headerlink" href="#pyarrow.Field.name" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py attribute"> |
| <dt id="pyarrow.Field.nullable"> |
| <code class="sig-name descname">nullable</code><a class="headerlink" href="#pyarrow.Field.nullable" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.Field.remove_metadata"> |
| <code class="sig-name descname">remove_metadata</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.Field.remove_metadata" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Create new field without metadata, if any</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p><strong>field</strong> (<em>pyarrow.Field</em>)</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py attribute"> |
| <dt id="pyarrow.Field.type"> |
| <code class="sig-name descname">type</code><a class="headerlink" href="#pyarrow.Field.type" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.Field.with_metadata"> |
| <code class="sig-name descname">with_metadata</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em>, <em class="sig-param"><span class="n">metadata</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.Field.with_metadata" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Add metadata as dict of string keys and values to Field</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>metadata</strong> (<em>dict</em>) – Keys and values must be string-like / coercible to bytes</p> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><strong>field</strong> (<em>pyarrow.Field</em>)</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.Field.with_name"> |
| <code class="sig-name descname">with_name</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em>, <em class="sig-param"><span class="n">name</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.Field.with_name" title="Permalink to this definition">¶</a></dt> |
| <dd><p>A copy of this field with the replaced name</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>name</strong> (<em>str</em>) – </p> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><strong>field</strong> (<em>pyarrow.Field</em>)</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.Field.with_nullable"> |
| <code class="sig-name descname">with_nullable</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">self</span></em>, <em class="sig-param"><span class="n">nullable</span></em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.Field.with_nullable" title="Permalink to this definition">¶</a></dt> |
| <dd><p>A copy of this field with the replaced nullability</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>nullable</strong> (<em>bool</em>) – </p> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><strong>field</strong> (<em>pyarrow.Field</em>)</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt id="pyarrow.Field.with_type"> |
| <code class="sig-name descname">with_type</code><span class="sig-paren">(</span><em class="sig-param">self</em>, <em class="sig-param">DataType new_type</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.Field.with_type" title="Permalink to this definition">¶</a></dt> |
| <dd><p>A copy of this field with the replaced type</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><p><strong>new_type</strong> (<a class="reference internal" href="pyarrow.DataType.html#pyarrow.DataType" title="pyarrow.DataType"><em>pyarrow.DataType</em></a>) – </p> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p><strong>field</strong> (<em>pyarrow.Field</em>)</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
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