title: Building list of lists from CSV file
body: <p>I have an Excel file(that I am exporting as a csv) that I want to parse, but I am having trouble with finding the best way to do it. The csv is a list of computers in my network, and what accounts are in the local administrator group for each one. I have done something similar with tuples, but the number of accounts for each computer range from 1 to 30. I want to build a list of lists, then go through each list to find the accounts that should be there(Administrator, etc.) and delete them, so that I can then export a list of only accounts that shouldn't be a local admin, but are. The csv file is formatted as follows:</p>
  
  <pre><code>"computer1"    Administrator    localadmin    useraccount
  "computer2"    localadmin       Administrator 
  "computer3"    localadmin       Administrator user2account
  </code></pre>
  
  <p>Any help would be appreciated</p>
  
  <p>EDIT: Here is the code I am working with</p>
  
  <pre><code>import csv 
  import sys #used for passing in the argument
  file_name = sys.argv[1] #filename is argument 1
  with open(file_name, 'rU') as f:  #opens PW file
      reader = csv.reader(f)
      data = list(list(rec) for rec in csv.reader(f, delimiter=',')) #reads csv into a list of lists
      f.close() #close the csv
  
  for i in range(len(data)):
      print data[i][0] #this alone will print all the computer names
      for j in range(len(data[i])) #Trying to run another for loop to print the usernames
          print data[i][j]
  </code></pre>
  
  <p>The issue is with the second for loop. I want to be able to read across each line and for now, just print them.</p>