title: Regex pattern to remove numeric value from words in pyspark
body: <p>I am working on pyspark dataframe and I have a column of <code>words</code> <code>(array&lt;string&gt; type)</code>. What should be the regex pattern to remove numeric values and numeric values from words?</p>
  <pre><code>+---+----------------------------------------------+
  |id |    words                                     |
  +---+----------------------------------------------+
  |564|[fhbgtrj5, 345gjhg, ghth578ghu, 5897, fhrfu44]|
  +---+----------------------------------------------+
  </code></pre>
  <p>expected output:</p>
  <pre><code>+---+----------------------------------------------+
  |id |words                                         |
  +---+----------------------------------------------+
  |564|               [fhbgtrj, gjhg, ghthghu, fhrfu]|
  +---+----------------------------------------------+
  </code></pre>
  <p>Please help.</p>