title: Changing string values
body: <p>I have the following list:</p>
  <p><code>weather = ['sunny', 'foggy', 'cloudy', 22]</code> that I would like to use it in a 'sche' of spark DataFrame in the follwoing way:</p>
  <pre><code>sche = &quot;f'status_{weather[0]}_today' string, f'temprature_{weather[3]_today}' int&quot;
  </code></pre>
  <p>So that at the end I get 2 columns in my new dataframe as following:
  First column: <code>status_sunny_today</code>
  Second column: <code>temprature_22_today</code></p>
  <p>but when I run the code it returns error and does not recognize the format in sche above. If I print just sche, it returns: <code>f'status_{weather[0]}_today' string, f'temprature_{weather[3]_today}' int</code></p>