title: Syntax error on opening quotation mark
body: <p>I'm trying to run a script for exercise 3.3 in the book Think Python:</p>
  
  <p>Problem: Python provides a built-in function called len that returns the length of a string, so the value of <code>len('allen')</code> is <code>5</code>. Write a function named right_justify that takes a string named s as a parameter and prints the string with enough leading spaces so that the last letter of the string is in column 70 of the display.</p>
  
  <p>I've worked a few kinks out of script so far and right now I have this:</p>
  
  <pre><code>#!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  def right_justify(s):
      print ‘ ‘ * (70 - len(s)) + s
  
  right_justify(‘allen’)
  </code></pre>
  
  <p>and when I try to run it I get the following error:</p>
  
  <pre><code> File "/Users/Jon/Documents/Python/Chapter 3/right justify.py", line 5
      print ‘ ‘ * (70 - len(s)) + s
            ^
  SyntaxError: invalid syntax
  </code></pre>
  
  <p>What mistake did I make and what should I do to fix this script?</p>