title: Python: I have pandas dataframe which has the same column name. How to change one of those?
body: <p>I have pandas dataframe which has the same column names. (column names are a,b,a,a,a)
  Below is example.</p>
  
  <p><a href="https://i.stack.imgur.com/wYLzJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wYLzJ.png" alt="enter image description here"></a></p>
  
  <p>Is there any way I can change column name only for 3rd column from the left by specifying column location? I found that there is a way to change column name by making a new list. But I wanted to see if there is any way I can specify column location and change the name.
  Below is what I want.
  <a href="https://i.stack.imgur.com/ZORzf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZORzf.png" alt="enter image description here"></a></p>
  
  <p>Since I am new to programming, I would appreciate any of your help!</p>