title: Pyspark: encoding chinese chararacters when saving dataframe as csv file
body: <p>I tried to save a dataframe that has columns containing Chinese letters by using this method:</p>
  
  <pre class="lang-python prettyprint-override"><code>df.coalesce(1).write.option("header", "true").csv(r'path\...\file.csv')
  </code></pre>
  
  <p>But the output contains strange characters instead of Chinese letters.</p>