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<!DOCTYPE html>
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<title>File Exercise — Programming in Python 8.0 documentation</title>
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<p class="caption" role="heading"><span class="caption-text">Topics in the Program</span></p>
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<li class="breadcrumb-item"><a href="../../topics/09-files/index.html"><span class="section-number">9. </span>File Handling</a></li>
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<section id="file-exercise">
<span id="exercise-file-lab"></span><h1>File Exercise<a class="headerlink" href="#file-exercise" title="Link to this heading"></a></h1>
<section id="goal">
<h2>Goal:<a class="headerlink" href="#goal" title="Link to this heading"></a></h2>
<p>Get a little bit of practice with handling files and parsing simple text.</p>
</section>
<section id="paths-and-file-processing">
<h2>Paths and File Processing<a class="headerlink" href="#paths-and-file-processing" title="Link to this heading"></a></h2>
<ul class="simple">
<li><p>Write a program which prints the full path for all files in the current
directory, one per line. Use either the <code class="docutils literal notranslate"><span class="pre">os</span></code> module or <code class="docutils literal notranslate"><span class="pre">pathlib</span></code>.</p></li>
<li><p>Write a program which copies a file from a source, to a destination
(without using shutil, or the OS copy command (you are essentially writing a simple version of the OS copy command)).</p>
<ul>
<li><p>This should work for any kind of file, so you need to open
the files in binary mode: <code class="docutils literal notranslate"><span class="pre">open(filename,</span> <span class="pre">'rb')</span></code> (or <code class="docutils literal notranslate"><span class="pre">'wb'</span></code> for
writing). Note that for binary files, you can’t use <code class="docutils literal notranslate"><span class="pre">readline()</span></code> –
lines don’t have any meaning for binary files.</p></li>
<li><p>Test it with both text and binary files (maybe a jpeg or something of your choosing).</p></li>
<li><p>Advanced: make it work for any size file: i.e. don’t read the entire
contents of the file into memory at once.</p></li>
<li><p>This should only be a few lines of code :-)</p></li>
</ul>
</li>
</ul>
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