title: Is there a way to find the path of an application with standard libraries?
body: <p>I'd like to know if it is possible to find the installation directory of an application under Windows 7, such as MS Excel, with standard python 2.7 libraries. I mean, it shouldn't use any pywin32, or xlrd etc.</p>
  
  <p>Maybe it will look up registry to find the installation path?</p>