title: Python - How to convert only numbers in a mixed list into float?
body: <p>I'm trying to learn Python and i have a problem, so if i have something like that: </p>
  
  <pre><code>data_l = ['data', '18.8', '17.9', '0.0']
  </code></pre>
  
  <p>How do i make it like that?</p>
  
  <pre><code>data_l = ['data', 18.8, 18.9, 0.0]
  </code></pre>