title: Change just one line in a text file?
body: <p>I have a text file with the format:</p>
  
  <pre><code>(title,price,id#)
  
  CD1,11.00,111111
  CD2,12.00,222222
  CD3,13.00,333333
  CD4,14.00,444444
  CD5,15.00,555555
  CD6,16.00,666666
  </code></pre>
  
  <p>What is the best way to go change the price of the appropriate CD if I'm given the id# and new price?</p>
  
  <p>I'm sure it has something do to with getting the line and splitting it, but I'm not sure how I edit just one line and not mess up the whole file.</p>