title: raw_input in python 2.7
body: <p>I using the raw_input API in python 2.7</p>
  
  <p>I do:</p>
  
  <pre><code>mass_storage_choice = raw_input("Have you enabled USB mass storage on the phone Yes or No?");
  </code></pre>
  
  <p>I get:</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:\tools\ide\juno\eclipse\plugins\org.python.pydev_2.7.3.2013031601\pysrc\pydevd_comm.py", line 765, in doIt
      result = pydevd_vars.evaluateExpression(self.thread_id, self.frame_id, self.expression, self.doExec)
    File "C:\tools\ide\juno\eclipse\plugins\org.python.pydev_2.7.3.2013031601\pysrc\pydevd_vars.py", line 376, in evaluateExpression
      result = eval(compiled, updated_globals, frame.f_locals)
    File "&lt;string&gt;", line 1, in &lt;module&gt;
  NameError: name 'Y' is not defined
  </code></pre>
  
  <p>Any ideas why?</p>