title: ctrl+B is not working for python in sublimetext2
body: <p>I wanted to run python in sublimetext2 so I choose the build system as python then I went through <a href="http://wbond.net/sublime_packages/package_control/installation" rel="nofollow noreferrer">this site</a> to install the package control I used the manual instruction for installing the package I don't know how to restart the sublime text2 and pressing ctrl+B doesn't show me anything I tried to print "hello world" but it shows me nothing.
  what can I do to make it work?I searched a lot in stackoverflow questions <a href="https://stackoverflow.com/questions/8551735/how-do-i-run-python-code-from-sublime-text-2">like this</a> but still I have problem
  Thanks.</p>