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<h1><i class="glyphicon glyphicon-cog"></i> <code class="obj">open</code>
<span class="sig">(<code>mode=&#39;rb&#39;,</code> <code>ensure_dir=None</code>)</span></h1>
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<ul class=page-meta>
<li>Method of <a href="../">Artifact</a></li>
</ul>
<p>This opens the artifact for reading or writing. The default behavior is that
if the artifact is opened for reading, the directory it's contained within
automatically is created. This can be disabled or enabled with the
<code>ensure_dir</code> parameter.</p>
<p>If the artifact is opened for writing, a copy will be created and only
committed when the entire build process goes through smoothly and the
changes are committed by the builder.</p>
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<h2 id="example">Example</h2><div class="hll"><pre><span></span><span class="n">ctx</span> <span class="o">=</span> <span class="n">get_ctx</span><span class="p">()</span>
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<span class="nd">@ctx</span><span class="o">.</span><span class="n">sub_artifact</span><span class="p">(</span><span class="s1">&#39;artifact.txt&#39;</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">build_stylesheet</span><span class="p">(</span><span class="n">artifact</span><span class="p">):</span>
<span class="k">with</span> <span class="n">artifact</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;w&#39;</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
<span class="n">f</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;Hello World!</span><span class="se">\n</span><span class="s1">&#39;</span><span class="p">)</span>
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