title: How to access a column in a list of lists in python
body: <p>I have a 2D array in python modeled by a list of lists and I want to extract the column. I made a quick research and I found a way that uses numpy arrays. The problem is that <strong>I do not want to use numpy</strong> so I don't want to convert my list of lists into a numpy array and then use [:,1] syntax. I tried using it on a normal list of lists but it shows an error so it's not possible. I am asking for a similar thing for list of lists without having to go through each element(In numpy arrays, it's faster to access a column by using [:,1] syntax than iterating over the elements of the array).</p>
  
  <p>I found this <a href="https://stackoverflow.com/questions/36281219/iterate-across-columns-in-a-list-of-lists-in-python">link</a> but again it suggests iterating over elements without a shortcut.</p>
  
  <p>Thanks in advance.</p>