title: Append specific rows from one list to another
body: <p>Having some difficulty trying to take a 2d list with 7 columns and 10 rows, and append all rows from only columns 4,5 and 6 (or 3,4,5 from index 0) to a new list. The original list is actually a csv and is much, much longer but I've just put part of it in the function for troubleshooting purposes.
  What I have so far is...</p>
  
  <pre><code>def coords():
      # just an example of first couple lines...
      bigList = [['File','FZone','Type','ID','Lat','Lon','Ref','RVec']
      ['20120505','Cons','mit','3_10','-21.77','119.11','mon_grs','14.3'] 
  
      newList=[] 
      for row in bigList[1:]: # skip the header   
          newList.append(row[3])
      return newList       # return newList to main so it can be sent to other functions
  </code></pre>
  
  <p>This code gives me a new list with 'ID' only but I also want 'Lat' and 'Lon'.
  The new list should look like...['3_10', '-21.77','119.11']['4_10','-21.10'...]
  I tried re-writing newList.append(row[3,4,5])...and of course that doesn't work but not sure how to go about it. </p>