title: Why wouldn't I want to add Python.exe to my System Path at install time?
body: <p>I'm reinstalling Python, on Windows 7, and one of the first dialog boxes is the Customize Python screen.</p>
  
  <p>The default setting for "Add Python.exe to Path" is "Entire feature will be unavailable."</p>
  
  <p>I always change this to "Will be installed on local hard drive."</p>
  
  <p>It's not an issue, changing the system environment variables is a snap, but is there any upside to leaving this un-ticked?</p>