title: Import csv into python and sum the row of numbers
body: <p>I have started learning python with great enthusiasm and managed to get through the procedures, functions and bit of lists. And feel ready to take the learning forward by building a useful application. </p>
  
  <p>I would like the user to export an excel file into csv with just one row of numbers, some of them negative, positive and zeros. And want to calculate the average of positive numbers and average of negative numbers. </p>
  
  <p>The calculating bit isn't the problem, its the importing csv bit. I've been reading the python documentation but looked confusing.</p>
  
  <p>Please get me started on importing a csv file and summing the row of numbers. Thank you!</p>