an> <span class="pre">for</span> <span class="pre">writing</span></code>:</p>
<blockquote>
<div><p>The file was opened for reading, not writing.</p>
</div></blockquote>
<p><code class="docutils literal notranslate"><span class="pre">Can</span> <span class="pre">not</span> <span class="pre">write</span> <span class="pre">tiles</span> <span class="pre">to</span> <span class="pre">a</span> <span class="pre">stripped</span> <span class="pre">image</span></code>:</p>
<blockquote>
<div><p>The image is assumed to 