title: Seek from end of file in python 3
body: <p>One of the changes in python 3 has been to remove the ability to seek from the end of the file in normal text mode. What is the generally accepted alternative to this?</p>
  
  <p>For example in python 2.7 I would enter file.seek(-3,2)</p>
  
  <p>I've read a bit about why they did this so please don't just link to a PEP. I know that using 'rb' would allow me to seek, but this makes my text file read in the wrong format.</p>