title: get-dummies() getting applied on float parameter
body: <p>I have a dataset which contains both numerical and categorical values , but when I apply <code>pd.get_dummies()</code>, I am getting dummies of a parameter which contains float value as well.</p>
  <p>I tried inserting individual parameters into <code>get_dummies(df ,columns=[p1 , p2 , p3 ..])</code> and it works fine, but is there a proper solution for <code>get_dummies</code> to ignore a single parameter?</p>