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<div class="section" id="module-apache_beam.io.localfilesystem">
<span id="apache-beam-io-localfilesystem-module"></span><h1>apache_beam.io.localfilesystem module<a class="headerlink" href="#module-apache_beam.io.localfilesystem" title="Permalink to this headline"></a></h1>
<p>Local File system implementation for accessing files on disk.</p>
<dl class="class">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem">
<em class="property">class </em><code class="descclassname">apache_beam.io.localfilesystem.</code><code class="descname">LocalFileSystem</code><span class="sig-paren">(</span><em>pipeline_options</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference internal" href="apache_beam.io.filesystem.html#apache_beam.io.filesystem.FileSystem" title="apache_beam.io.filesystem.FileSystem"><code class="xref py py-class docutils literal"><span class="pre">apache_beam.io.filesystem.FileSystem</span></code></a></p>
<p>A Local <code class="docutils literal"><span class="pre">FileSystem</span></code> implementation for accessing files on disk.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>pipeline_options</strong> – Instance of <code class="docutils literal"><span class="pre">PipelineOptions</span></code> or dict of options and
values (like <code class="docutils literal"><span class="pre">RuntimeValueProvider.runtime_options</span></code>).</td>
</tr>
</tbody>
</table>
<dl class="classmethod">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.scheme">
<em class="property">classmethod </em><code class="descname">scheme</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.scheme"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.scheme" title="Permalink to this definition"></a></dt>
<dd><p>URI scheme for the FileSystem</p>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.join">
<code class="descname">join</code><span class="sig-paren">(</span><em>basepath</em>, <em>*paths</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.join"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.join" title="Permalink to this definition"></a></dt>
<dd><p>Join two or more pathname components for the filesystem</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>basepath</strong> – string path of the first component of the path</li>
<li><strong>paths</strong> – path components to be added</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>Returns: full path after combining all the passed components</p>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.split">
<code class="descname">split</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.split"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.split" title="Permalink to this definition"></a></dt>
<dd><p>Splits the given path into two parts.</p>
<p>Splits the path into a pair (head, tail) such that tail contains the last
component of the path and head contains everything up to that.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – path as a string</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">a pair of path components as strings.</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.mkdirs">
<code class="descname">mkdirs</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.mkdirs"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.mkdirs" title="Permalink to this definition"></a></dt>
<dd><p>Recursively create directories for the provided path.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path of the directory structure that should be created</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body">IOError if leaf directory already exists.</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.has_dirs">
<code class="descname">has_dirs</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.has_dirs"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.has_dirs" title="Permalink to this definition"></a></dt>
<dd><p>Whether this FileSystem supports directories.</p>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.create">
<code class="descname">create</code><span class="sig-paren">(</span><em>path</em>, <em>mime_type='application/octet-stream'</em>, <em>compression_type='auto'</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.create"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.create" title="Permalink to this definition"></a></dt>
<dd><p>Returns a write channel for the given file path.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>path</strong> – string path of the file object to be written to the system</li>
<li><strong>mime_type</strong> – MIME type to specify the type of content in the file object</li>
<li><strong>compression_type</strong> – Type of compression to be used for this object</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>Returns: file handle with a close function for the user to use</p>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.open">
<code class="descname">open</code><span class="sig-paren">(</span><em>path</em>, <em>mime_type='application/octet-stream'</em>, <em>compression_type='auto'</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.open"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.open" title="Permalink to this definition"></a></dt>
<dd><p>Returns a read channel for the given file path.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>path</strong> – string path of the file object to be written to the system</li>
<li><strong>mime_type</strong> – MIME type to specify the type of content in the file object</li>
<li><strong>compression_type</strong> – Type of compression to be used for this object</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>Returns: file handle with a close function for the user to use</p>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.copy">
<code class="descname">copy</code><span class="sig-paren">(</span><em>source_file_names</em>, <em>destination_file_names</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.copy"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.copy" title="Permalink to this definition"></a></dt>
<dd><p>Recursively copy the file tree from the source to the destination</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>source_file_names</strong> – list of source file objects that needs to be copied</li>
<li><strong>destination_file_names</strong> – list of destination of the new object</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><p class="first last"><code class="docutils literal"><span class="pre">BeamIOError</span></code> if any of the copy operations fail</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.rename">
<code class="descname">rename</code><span class="sig-paren">(</span><em>source_file_names</em>, <em>destination_file_names</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.rename"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.rename" title="Permalink to this definition"></a></dt>
<dd><p>Rename the files at the source list to the destination list.
Source and destination lists should be of the same size.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>source_file_names</strong> – List of file paths that need to be moved</li>
<li><strong>destination_file_names</strong> – List of destination_file_names for the files</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><p class="first last"><code class="docutils literal"><span class="pre">BeamIOError</span></code> if any of the rename operations fail</p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.exists">
<code class="descname">exists</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.exists"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.exists" title="Permalink to this definition"></a></dt>
<dd><p>Check if the provided path exists on the FileSystem.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path that needs to be checked.</td>
</tr>
</tbody>
</table>
<p>Returns: boolean flag indicating if path exists</p>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.size">
<code class="descname">size</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.size"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.size" title="Permalink to this definition"></a></dt>
<dd><p>Get size of path on the FileSystem.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path in question.</td>
</tr>
</tbody>
</table>
<p>Returns: int size of path according to the FileSystem.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Raises:</th><td class="field-body"><code class="docutils literal"><span class="pre">BeamIOError</span></code> if path doesn’t exist.</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.last_updated">
<code class="descname">last_updated</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.last_updated"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.last_updated" title="Permalink to this definition"></a></dt>
<dd><p>Get UNIX Epoch time in seconds on the FileSystem.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path of file.</td>
</tr>
</tbody>
</table>
<p>Returns: float UNIX Epoch time</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Raises:</th><td class="field-body"><code class="docutils literal"><span class="pre">BeamIOError</span></code> if path doesn’t exist.</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.checksum">
<code class="descname">checksum</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.checksum"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.checksum" title="Permalink to this definition"></a></dt>
<dd><p>Fetch checksum metadata of a file on the
<a class="reference internal" href="apache_beam.io.filesystem.html#apache_beam.io.filesystem.FileSystem" title="apache_beam.io.filesystem.FileSystem"><code class="xref py py-class docutils literal"><span class="pre">FileSystem</span></code></a>.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>path</strong> – string path of a file.</td>
</tr>
</tbody>
</table>
<p>Returns: string containing file size.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Raises:</th><td class="field-body"><code class="docutils literal"><span class="pre">BeamIOError</span></code> if path isn’t a file or doesn’t exist.</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="apache_beam.io.localfilesystem.LocalFileSystem.delete">
<code class="descname">delete</code><span class="sig-paren">(</span><em>paths</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/apache_beam/io/localfilesystem.html#LocalFileSystem.delete"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#apache_beam.io.localfilesystem.LocalFileSystem.delete" title="Permalink to this definition"></a></dt>
<dd><p>Deletes files or directories at the provided paths.
Directories will be deleted recursively.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>paths</strong> – list of paths that give the file objects to be deleted</td>
</tr>
<tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><code class="docutils literal"><span class="pre">BeamIOError</span></code> if any of the delete operations fail</td>
</tr>
</tbody>
</table>
</dd></dl>
</dd></dl>
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