title: Set Column Names from list - Python
body: <p>I have a pandas dataframe with 7 columns.</p>
  <p>The first three columns already have a column name (for example: <code>['Apple', 'Banana', 'Strawberry']</code>.</p>
  <p>I want to set the other 4 columns names as ones from a list. I have a list with the following 4: <code>['Square','Round','Circle','Triangle']</code></p>
  <p>I would like to create a dataframe with 7 columns with the following names: <code>['Apple','Banana','Strawberry','Square','Round','Circle','Triangle']</code>. Is this even possible?</p>