title: How to write in a specific cell in a CSV file?
body: <p>I have an asignment in which I need to imput random grades of different students in a csv file using Python 3, and get the average of each student(the average thing and how to get the random grades, I know how to do it), the thing is that I don't know how to write the grades on those specific columns and rows(highlighted ones).</p>
  <p>Highlighted area is the space in which I need to write random grades:<br>
  <img src="https://i.stack.imgur.com/6ConR.png" alt="image of grades file" /></p>
  <p>Is there anyway that this can be done? I'm fairly new to programming and Python 3, and as far as I've read, specifics cells can't be changed using normal means.</p>