[Tut] How to Convert Avro to CSV in Python?

How to Convert Avro to CSV in Python?

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<p class="has-global-color-8-background-color has-background"><img src="https://s.w.org/images/core/emoji/14.0.0/72x72/1f4ac.png" alt="?" class="wp-smiley" style="height: 1em; max-height: 1em;" /> <strong>Question</strong>: How to convert an <em>.avro</em> file to a <em>.csv</em> file in Python?</p>
<p><strong>Solution</strong>:</p>
<p class="has-global-color-8-background-color has-background">To convert an Avro file <code>my_file.avro</code> to a CSV file <code>my_file.csv</code>, create a CSV writer using the <code>csv</code> module and iterate over all rows using the <a href="https://blog.finxter.com/iterators-iterables-and-itertools/" data-type="post" data-id="29507" target="_blank" rel="noreferrer noopener">iterator</a> returned by <code>fastavro.reader()</code>. Then write each row to a file using the <code>writerow()</code> function.</p>
<p>Here’s an example:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="python" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">from fastavro import reader
import csv with open('my_file.avro', 'rb') as file_object: csv_file = csv.writer(open("my_file.csv", "w+")) head = True for x in reader(file_object): if head: # write header header = emp.keys() csv_file.writerow(header) head = False # write normal row csv_file.writerow(emp.values())</pre>
<p><strong>Related</strong>: This code is a modified and improved version of <a rel="noreferrer noopener" href="https://stackoverflow.com/questions/50676185/how-to-convert-avro-file-to-csv-file-in-python" data-type="URL" data-id="https://stackoverflow.com/questions/50676185/how-to-convert-avro-file-to-csv-file-in-python" target="_blank">this</a> source.</p>
<p class="has-base-background-color has-background"><img src="https://s.w.org/images/core/emoji/14.0.0/72x72/1f4a1.png" alt="?" class="wp-smiley" style="height: 1em; max-height: 1em;" /> <strong>Avro</strong> is a data serialization framework for RPCs (remote procedure calls) that uses JSON and binary format to serialize data.</p>
<p class="has-base-background-color has-background"><img src="https://s.w.org/images/core/emoji/14.0.0/72x72/1f4a1.png" alt="?" class="wp-smiley" style="height: 1em; max-height: 1em;" /> <strong>CSV</strong> stands for comma-separated values, so you have a row-based file format where values are separated by commas, and the file is named using the suffix <code>.csv</code>.</p>
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