title: changing the column names of a concated dataframe
body: <p><a href="https://i.stack.imgur.com/KoYvh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KoYvh.png" alt="DataFrame"></a></p>
  
  <p>This is my dataframe that has column names 0 and 0. I need to change it to x and y. Is there any possible solution.</p>
  
  <pre><code>a = pd.DataFrame(array_x)
  b = pd.DataFrame(array_y)
  c = pd.concat([a,b],axis = 1)
  </code></pre>
  
  <p>This is my code</p>