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+ <div class="section" id="pyarrow-bufferoutputstream">
+<h1>pyarrow.BufferOutputStream<a class="headerlink" href="#pyarrow-bufferoutputstream" title="Permalink to this headline">¶</a></h1>
+<dl class="class">
+<dt id="pyarrow.BufferOutputStream">
+<em class="property">class </em><code class="descclassname">pyarrow.</code><code class="descname">BufferOutputStream</code><a class="headerlink" href="#pyarrow.BufferOutputStream" title="Permalink to this definition">¶</a></dt>
+<dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">pyarrow.lib.NativeFile</span></code></p>
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.__init__">
+<code class="descname">__init__</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.__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 border="1" class="longtable docutils">
+<colgroup>
+<col width="10%" />
+<col width="90%" />
+</colgroup>
+<tbody valign="top">
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.close" title="pyarrow.BufferOutputStream.close"><code class="xref py py-obj docutils literal notranslate"><span class="pre">close</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.download" title="pyarrow.BufferOutputStream.download"><code class="xref py py-obj docutils literal notranslate"><span class="pre">download</span></code></a>(self, stream_or_path[, buffer_size])</td>
+<td>Read file completely to local path (rather than reading completely into memory).</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.fileno" title="pyarrow.BufferOutputStream.fileno"><code class="xref py py-obj docutils literal notranslate"><span class="pre">fileno</span></code></a>(self)</td>
+<td>NOT IMPLEMENTED</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.flush" title="pyarrow.BufferOutputStream.flush"><code class="xref py py-obj docutils literal notranslate"><span class="pre">flush</span></code></a>(self)</td>
+<td>Flush the buffer stream, if applicable.</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.getvalue" title="pyarrow.BufferOutputStream.getvalue"><code class="xref py py-obj docutils literal notranslate"><span class="pre">getvalue</span></code></a>(self)</td>
+<td>Finalize output stream and return result as pyarrow.Buffer.</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.isatty" title="pyarrow.BufferOutputStream.isatty"><code class="xref py py-obj docutils literal notranslate"><span class="pre">isatty</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.read" title="pyarrow.BufferOutputStream.read"><code class="xref py py-obj docutils literal notranslate"><span class="pre">read</span></code></a>(self[, nbytes])</td>
+<td>Read indicated number of bytes from file, or read all remaining bytes if no argument passed</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.read1" title="pyarrow.BufferOutputStream.read1"><code class="xref py py-obj docutils literal notranslate"><span class="pre">read1</span></code></a>(self[, nbytes])</td>
+<td>Read and return up to n bytes.</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.read_buffer" title="pyarrow.BufferOutputStream.read_buffer"><code class="xref py py-obj docutils literal notranslate"><span class="pre">read_buffer</span></code></a>(self[, nbytes])</td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.readable" title="pyarrow.BufferOutputStream.readable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readable</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.readall" title="pyarrow.BufferOutputStream.readall"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readall</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.readinto" title="pyarrow.BufferOutputStream.readinto"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readinto</span></code></a>(self, b)</td>
+<td>Read into the supplied buffer</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.readline" title="pyarrow.BufferOutputStream.readline"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readline</span></code></a>(self[, size])</td>
+<td>NOT IMPLEMENTED.</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.readlines" title="pyarrow.BufferOutputStream.readlines"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readlines</span></code></a>(self[, hint])</td>
+<td>NOT IMPLEMENTED.</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.seek" title="pyarrow.BufferOutputStream.seek"><code class="xref py py-obj docutils literal notranslate"><span class="pre">seek</span></code></a>(self, int64_t position, int whence=0)</td>
+<td>Change current file stream position</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.seekable" title="pyarrow.BufferOutputStream.seekable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">seekable</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.size" title="pyarrow.BufferOutputStream.size"><code class="xref py py-obj docutils literal notranslate"><span class="pre">size</span></code></a>(self)</td>
+<td>Return file size</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.tell" title="pyarrow.BufferOutputStream.tell"><code class="xref py py-obj docutils literal notranslate"><span class="pre">tell</span></code></a>(self)</td>
+<td>Return current stream position</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.truncate" title="pyarrow.BufferOutputStream.truncate"><code class="xref py py-obj docutils literal notranslate"><span class="pre">truncate</span></code></a>(self)</td>
+<td>NOT IMPLEMENTED</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.upload" title="pyarrow.BufferOutputStream.upload"><code class="xref py py-obj docutils literal notranslate"><span class="pre">upload</span></code></a>(self, stream[, buffer_size])</td>
+<td>Pipe file-like object to file</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.writable" title="pyarrow.BufferOutputStream.writable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">writable</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.write" title="pyarrow.BufferOutputStream.write"><code class="xref py py-obj docutils literal notranslate"><span class="pre">write</span></code></a>(self, data)</td>
+<td>Write byte from any object implementing buffer protocol (bytes, bytearray, ndarray, pyarrow.Buffer)</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.writelines" title="pyarrow.BufferOutputStream.writelines"><code class="xref py py-obj docutils literal notranslate"><span class="pre">writelines</span></code></a>(self, lines)</td>
+<td></td>
+</tr>
+</tbody>
+</table>
+<p class="rubric">Attributes</p>
+<table border="1" class="longtable docutils">
+<colgroup>
+<col width="10%" />
+<col width="90%" />
+</colgroup>
+<tbody valign="top">
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.closed" title="pyarrow.BufferOutputStream.closed"><code class="xref py py-obj docutils literal notranslate"><span class="pre">closed</span></code></a></td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferOutputStream.mode" title="pyarrow.BufferOutputStream.mode"><code class="xref py py-obj docutils literal notranslate"><span class="pre">mode</span></code></a></td>
+<td>binary read * wb: binary write * rb+: binary read and write</td>
+</tr>
+</tbody>
+</table>
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.close">
+<code class="descname">close</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.close" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="attribute">
+<dt id="pyarrow.BufferOutputStream.closed">
+<code class="descname">closed</code><a class="headerlink" href="#pyarrow.BufferOutputStream.closed" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.download">
+<code class="descname">download</code><span class="sig-paren">(</span><em>self</em>, <em>stream_or_path</em>, <em>buffer_size=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.download" title="Permalink to this definition">¶</a></dt>
+<dd><p>Read file completely to local path (rather than reading completely into
+memory). First seeks to the beginning of the file.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.fileno">
+<code class="descname">fileno</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.fileno" title="Permalink to this definition">¶</a></dt>
+<dd><p>NOT IMPLEMENTED</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.flush">
+<code class="descname">flush</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.flush" title="Permalink to this definition">¶</a></dt>
+<dd><p>Flush the buffer stream, if applicable.</p>
+<p>No-op to match the IOBase interface.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.getvalue">
+<code class="descname">getvalue</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.getvalue" title="Permalink to this definition">¶</a></dt>
+<dd><p>Finalize output stream and return result as pyarrow.Buffer.</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">Returns:</th><td class="field-body"><strong>value</strong> (<em>Buffer</em>)</td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.isatty">
+<code class="descname">isatty</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.isatty" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="attribute">
+<dt id="pyarrow.BufferOutputStream.mode">
+<code class="descname">mode</code><a class="headerlink" href="#pyarrow.BufferOutputStream.mode" title="Permalink to this definition">¶</a></dt>
+<dd><p>binary read
+* wb: binary write
+* rb+: binary read and write</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">Type:</th><td class="field-body"><p class="first">The file mode. Currently instances of NativeFile may support</p>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Type:</th><td class="field-body"><ul class="first last simple">
+<li>rb</li>
+</ul>
+</td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.read">
+<code class="descname">read</code><span class="sig-paren">(</span><em>self</em>, <em>nbytes=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.read" title="Permalink to this definition">¶</a></dt>
+<dd><p>Read indicated number of bytes from file, or read all remaining bytes
+if no argument passed</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>nbytes</strong> (<em>int</em><em>, </em><em>default None</em>) – </td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><strong>data</strong> (<em>bytes</em>)</td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.read1">
+<code class="descname">read1</code><span class="sig-paren">(</span><em>self</em>, <em>nbytes=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.read1" title="Permalink to this definition">¶</a></dt>
+<dd><p>Read and return up to n bytes.</p>
+<p>Alias for read, needed to match the IOBase interface.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.read_buffer">
+<code class="descname">read_buffer</code><span class="sig-paren">(</span><em>self</em>, <em>nbytes=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.read_buffer" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.readable">
+<code class="descname">readable</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.readable" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.readall">
+<code class="descname">readall</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.readall" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.readinto">
+<code class="descname">readinto</code><span class="sig-paren">(</span><em>self</em>, <em>b</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.readinto" title="Permalink to this definition">¶</a></dt>
+<dd><p>Read into the supplied buffer</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>b</strong> (<em>any python object supporting buffer interface</em>) – </td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><em>number of bytes written</em></td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.readline">
+<code class="descname">readline</code><span class="sig-paren">(</span><em>self</em>, <em>size=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.readline" title="Permalink to this definition">¶</a></dt>
+<dd><p>NOT IMPLEMENTED. Read and return a line of bytes from the file.</p>
+<p>If size is specified, read at most size bytes.</p>
+<p>Line terminator is always b”n”.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.readlines">
+<code class="descname">readlines</code><span class="sig-paren">(</span><em>self</em>, <em>hint=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.readlines" title="Permalink to this definition">¶</a></dt>
+<dd><p>NOT IMPLEMENTED. Read lines of the file</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>hint</strong> (<em>int maximum number of bytes read until we stop</em>) – </td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.seek">
+<code class="descname">seek</code><span class="sig-paren">(</span><em>self</em>, <em>int64_t position</em>, <em>int whence=0</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.seek" title="Permalink to this definition">¶</a></dt>
+<dd><p>Change current file stream position</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>position</strong> (<em>int</em>) – Byte offset, interpreted relative to value of whence argument</li>
+<li><strong>whence</strong> (<em>int</em><em>, </em><em>default 0</em>) – Point of reference for seek offset</li>
+</ul>
+</td>
+</tr>
+</tbody>
+</table>
+<p class="rubric">Notes</p>
+<p>Values of whence:
+* 0 – start of stream (the default); offset should be zero or positive
+* 1 – current stream position; offset may be negative
+* 2 – end of stream; offset is usually negative</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">Returns:</th><td class="field-body"><strong>new_position</strong> (<em>the new absolute stream position</em>)</td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.seekable">
+<code class="descname">seekable</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.seekable" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.size">
+<code class="descname">size</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.size" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return file size</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.tell">
+<code class="descname">tell</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.tell" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return current stream position</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.truncate">
+<code class="descname">truncate</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.truncate" title="Permalink to this definition">¶</a></dt>
+<dd><p>NOT IMPLEMENTED</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.upload">
+<code class="descname">upload</code><span class="sig-paren">(</span><em>self</em>, <em>stream</em>, <em>buffer_size=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.upload" title="Permalink to this definition">¶</a></dt>
+<dd><p>Pipe file-like object to file</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.writable">
+<code class="descname">writable</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.writable" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.write">
+<code class="descname">write</code><span class="sig-paren">(</span><em>self</em>, <em>data</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.write" title="Permalink to this definition">¶</a></dt>
+<dd><p>Write byte from any object implementing buffer protocol (bytes,
+bytearray, ndarray, pyarrow.Buffer)</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>data</strong> (<em>bytes-like object</em><em> or </em><em>exporter of buffer protocol</em>) – </td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><strong>nbytes</strong> (<em>number of bytes written</em>)</td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferOutputStream.writelines">
+<code class="descname">writelines</code><span class="sig-paren">(</span><em>self</em>, <em>lines</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferOutputStream.writelines" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+</dd></dl>
+
+</div>
+
+
+ </div>
+
+ </div>
+ <footer>
+
+ <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
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+ <div itemprop="articleBody">
+
+ <div class="section" id="pyarrow-bufferreader">
+<h1>pyarrow.BufferReader<a class="headerlink" href="#pyarrow-bufferreader" title="Permalink to this headline">¶</a></h1>
+<dl class="class">
+<dt id="pyarrow.BufferReader">
+<em class="property">class </em><code class="descclassname">pyarrow.</code><code class="descname">BufferReader</code><a class="headerlink" href="#pyarrow.BufferReader" title="Permalink to this definition">¶</a></dt>
+<dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">pyarrow.lib.NativeFile</span></code></p>
+<p>Zero-copy reader from objects convertible to Arrow buffer</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>obj</strong> (<em>Python bytes</em><em> or </em><a class="reference internal" href="pyarrow.Buffer.html#pyarrow.Buffer" title="pyarrow.Buffer"><em>pyarrow.Buffer</em></a>) – </td>
+</tr>
+</tbody>
+</table>
+<dl class="method">
+<dt id="pyarrow.BufferReader.__init__">
+<code class="descname">__init__</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.__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 border="1" class="longtable docutils">
+<colgroup>
+<col width="10%" />
+<col width="90%" />
+</colgroup>
+<tbody valign="top">
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.close" title="pyarrow.BufferReader.close"><code class="xref py py-obj docutils literal notranslate"><span class="pre">close</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.download" title="pyarrow.BufferReader.download"><code class="xref py py-obj docutils literal notranslate"><span class="pre">download</span></code></a>(self, stream_or_path[, buffer_size])</td>
+<td>Read file completely to local path (rather than reading completely into memory).</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.fileno" title="pyarrow.BufferReader.fileno"><code class="xref py py-obj docutils literal notranslate"><span class="pre">fileno</span></code></a>(self)</td>
+<td>NOT IMPLEMENTED</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.flush" title="pyarrow.BufferReader.flush"><code class="xref py py-obj docutils literal notranslate"><span class="pre">flush</span></code></a>(self)</td>
+<td>Flush the buffer stream, if applicable.</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.isatty" title="pyarrow.BufferReader.isatty"><code class="xref py py-obj docutils literal notranslate"><span class="pre">isatty</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.read" title="pyarrow.BufferReader.read"><code class="xref py py-obj docutils literal notranslate"><span class="pre">read</span></code></a>(self[, nbytes])</td>
+<td>Read indicated number of bytes from file, or read all remaining bytes if no argument passed</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.read1" title="pyarrow.BufferReader.read1"><code class="xref py py-obj docutils literal notranslate"><span class="pre">read1</span></code></a>(self[, nbytes])</td>
+<td>Read and return up to n bytes.</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.read_buffer" title="pyarrow.BufferReader.read_buffer"><code class="xref py py-obj docutils literal notranslate"><span class="pre">read_buffer</span></code></a>(self[, nbytes])</td>
+<td></td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.readable" title="pyarrow.BufferReader.readable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readable</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.readall" title="pyarrow.BufferReader.readall"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readall</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.readinto" title="pyarrow.BufferReader.readinto"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readinto</span></code></a>(self, b)</td>
+<td>Read into the supplied buffer</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.readline" title="pyarrow.BufferReader.readline"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readline</span></code></a>(self[, size])</td>
+<td>NOT IMPLEMENTED.</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.readlines" title="pyarrow.BufferReader.readlines"><code class="xref py py-obj docutils literal notranslate"><span class="pre">readlines</span></code></a>(self[, hint])</td>
+<td>NOT IMPLEMENTED.</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.seek" title="pyarrow.BufferReader.seek"><code class="xref py py-obj docutils literal notranslate"><span class="pre">seek</span></code></a>(self, int64_t position, int whence=0)</td>
+<td>Change current file stream position</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.seekable" title="pyarrow.BufferReader.seekable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">seekable</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.size" title="pyarrow.BufferReader.size"><code class="xref py py-obj docutils literal notranslate"><span class="pre">size</span></code></a>(self)</td>
+<td>Return file size</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.tell" title="pyarrow.BufferReader.tell"><code class="xref py py-obj docutils literal notranslate"><span class="pre">tell</span></code></a>(self)</td>
+<td>Return current stream position</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.truncate" title="pyarrow.BufferReader.truncate"><code class="xref py py-obj docutils literal notranslate"><span class="pre">truncate</span></code></a>(self)</td>
+<td>NOT IMPLEMENTED</td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.upload" title="pyarrow.BufferReader.upload"><code class="xref py py-obj docutils literal notranslate"><span class="pre">upload</span></code></a>(self, stream[, buffer_size])</td>
+<td>Pipe file-like object to file</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.writable" title="pyarrow.BufferReader.writable"><code class="xref py py-obj docutils literal notranslate"><span class="pre">writable</span></code></a>(self)</td>
+<td></td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.write" title="pyarrow.BufferReader.write"><code class="xref py py-obj docutils literal notranslate"><span class="pre">write</span></code></a>(self, data)</td>
+<td>Write byte from any object implementing buffer protocol (bytes, bytearray, ndarray, pyarrow.Buffer)</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.writelines" title="pyarrow.BufferReader.writelines"><code class="xref py py-obj docutils literal notranslate"><span class="pre">writelines</span></code></a>(self, lines)</td>
+<td></td>
+</tr>
+</tbody>
+</table>
+<p class="rubric">Attributes</p>
+<table border="1" class="longtable docutils">
+<colgroup>
+<col width="10%" />
+<col width="90%" />
+</colgroup>
+<tbody valign="top">
+<tr class="row-odd"><td><a class="reference internal" href="#pyarrow.BufferReader.closed" title="pyarrow.BufferReader.closed"><code class="xref py py-obj docutils literal notranslate"><span class="pre">closed</span></code></a></td>
+<td></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="#pyarrow.BufferReader.mode" title="pyarrow.BufferReader.mode"><code class="xref py py-obj docutils literal notranslate"><span class="pre">mode</span></code></a></td>
+<td>binary read * wb: binary write * rb+: binary read and write</td>
+</tr>
+</tbody>
+</table>
+<dl class="method">
+<dt id="pyarrow.BufferReader.close">
+<code class="descname">close</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.close" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="attribute">
+<dt id="pyarrow.BufferReader.closed">
+<code class="descname">closed</code><a class="headerlink" href="#pyarrow.BufferReader.closed" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.download">
+<code class="descname">download</code><span class="sig-paren">(</span><em>self</em>, <em>stream_or_path</em>, <em>buffer_size=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.download" title="Permalink to this definition">¶</a></dt>
+<dd><p>Read file completely to local path (rather than reading completely into
+memory). First seeks to the beginning of the file.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.fileno">
+<code class="descname">fileno</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.fileno" title="Permalink to this definition">¶</a></dt>
+<dd><p>NOT IMPLEMENTED</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.flush">
+<code class="descname">flush</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.flush" title="Permalink to this definition">¶</a></dt>
+<dd><p>Flush the buffer stream, if applicable.</p>
+<p>No-op to match the IOBase interface.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.isatty">
+<code class="descname">isatty</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.isatty" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="attribute">
+<dt id="pyarrow.BufferReader.mode">
+<code class="descname">mode</code><a class="headerlink" href="#pyarrow.BufferReader.mode" title="Permalink to this definition">¶</a></dt>
+<dd><p>binary read
+* wb: binary write
+* rb+: binary read and write</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">Type:</th><td class="field-body"><p class="first">The file mode. Currently instances of NativeFile may support</p>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Type:</th><td class="field-body"><ul class="first last simple">
+<li>rb</li>
+</ul>
+</td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.read">
+<code class="descname">read</code><span class="sig-paren">(</span><em>self</em>, <em>nbytes=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.read" title="Permalink to this definition">¶</a></dt>
+<dd><p>Read indicated number of bytes from file, or read all remaining bytes
+if no argument passed</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>nbytes</strong> (<em>int</em><em>, </em><em>default None</em>) – </td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><strong>data</strong> (<em>bytes</em>)</td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.read1">
+<code class="descname">read1</code><span class="sig-paren">(</span><em>self</em>, <em>nbytes=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.read1" title="Permalink to this definition">¶</a></dt>
+<dd><p>Read and return up to n bytes.</p>
+<p>Alias for read, needed to match the IOBase interface.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.read_buffer">
+<code class="descname">read_buffer</code><span class="sig-paren">(</span><em>self</em>, <em>nbytes=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.read_buffer" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.readable">
+<code class="descname">readable</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.readable" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.readall">
+<code class="descname">readall</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.readall" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.readinto">
+<code class="descname">readinto</code><span class="sig-paren">(</span><em>self</em>, <em>b</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.readinto" title="Permalink to this definition">¶</a></dt>
+<dd><p>Read into the supplied buffer</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>b</strong> (<em>any python object supporting buffer interface</em>) – </td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><em>number of bytes written</em></td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.readline">
+<code class="descname">readline</code><span class="sig-paren">(</span><em>self</em>, <em>size=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.readline" title="Permalink to this definition">¶</a></dt>
+<dd><p>NOT IMPLEMENTED. Read and return a line of bytes from the file.</p>
+<p>If size is specified, read at most size bytes.</p>
+<p>Line terminator is always b”n”.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.readlines">
+<code class="descname">readlines</code><span class="sig-paren">(</span><em>self</em>, <em>hint=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.readlines" title="Permalink to this definition">¶</a></dt>
+<dd><p>NOT IMPLEMENTED. Read lines of the file</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>hint</strong> (<em>int maximum number of bytes read until we stop</em>) – </td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.seek">
+<code class="descname">seek</code><span class="sig-paren">(</span><em>self</em>, <em>int64_t position</em>, <em>int whence=0</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.seek" title="Permalink to this definition">¶</a></dt>
+<dd><p>Change current file stream position</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>position</strong> (<em>int</em>) – Byte offset, interpreted relative to value of whence argument</li>
+<li><strong>whence</strong> (<em>int</em><em>, </em><em>default 0</em>) – Point of reference for seek offset</li>
+</ul>
+</td>
+</tr>
+</tbody>
+</table>
+<p class="rubric">Notes</p>
+<p>Values of whence:
+* 0 – start of stream (the default); offset should be zero or positive
+* 1 – current stream position; offset may be negative
+* 2 – end of stream; offset is usually negative</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">Returns:</th><td class="field-body"><strong>new_position</strong> (<em>the new absolute stream position</em>)</td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.seekable">
+<code class="descname">seekable</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.seekable" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.size">
+<code class="descname">size</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.size" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return file size</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.tell">
+<code class="descname">tell</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.tell" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return current stream position</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.truncate">
+<code class="descname">truncate</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.truncate" title="Permalink to this definition">¶</a></dt>
+<dd><p>NOT IMPLEMENTED</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.upload">
+<code class="descname">upload</code><span class="sig-paren">(</span><em>self</em>, <em>stream</em>, <em>buffer_size=None</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.upload" title="Permalink to this definition">¶</a></dt>
+<dd><p>Pipe file-like object to file</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.writable">
+<code class="descname">writable</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.writable" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.write">
+<code class="descname">write</code><span class="sig-paren">(</span><em>self</em>, <em>data</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.write" title="Permalink to this definition">¶</a></dt>
+<dd><p>Write byte from any object implementing buffer protocol (bytes,
+bytearray, ndarray, pyarrow.Buffer)</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>data</strong> (<em>bytes-like object</em><em> or </em><em>exporter of buffer protocol</em>) – </td>
+</tr>
+<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><strong>nbytes</strong> (<em>number of bytes written</em>)</td>
+</tr>
+</tbody>
+</table>
+</dd></dl>
+
+<dl class="method">
+<dt id="pyarrow.BufferReader.writelines">
+<code class="descname">writelines</code><span class="sig-paren">(</span><em>self</em>, <em>lines</em><span class="sig-paren">)</span><a class="headerlink" href="#pyarrow.BufferReader.writelines" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+</dd></dl>
+
+</div>
+
+
+ </div>
+
+ </div>
+ <footer>
+
+ <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
+
+ <a href="pyarrow.BufferOutputStream.html" class="btn btn-neutral float-right" title="pyarrow.BufferOutputStream" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a>
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+ <p>
+ © Copyright 2016-2018 Apache Software Foundation
+
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