Find the version of VisualStudio installed on Windows using python

findVisualStudioVersion.py

'''
   :platform: Windows
   :synopsis: Finds the current version of VisualStudio installed, supporting
   Visual Studio 2005 to Visual Studio 2012 (and pretend support for 2014,
   if versioning conventions continue).

.. moduleauthor:: Cory Dolphin <wcdolphin@gmail.com>

  From:http://www.mztools.com/articles/2008/MZ2008003.aspx
      To detect which Visual Studio versions (2005, 2008, etc.) are installed on a computer from a setup, you can use the following Windows registry entries (or the ones in the next section):
      For Visual Studio 2005: HKEY_CLASSES_ROOT\VisualStudio.DTE.8.0
      For Visual Studio 2008: HKEY_CLASSES_ROOT\VisualStudio.DTE.9.0
      For Visual Studio 2010: HKEY_CLASSES_ROOT\VisualStudio.DTE.10.0
      For Visual Studio 2012: HKEY_CLASSES_ROOT\VisualStudio.DTE.11.0

'''


import _winreg
RegOpenKeyEx = _winreg.OpenKeyEx
RegError = _winreg.error
HKEY_CLASSES_ROOT = _winreg.HKEY_CLASSES_ROOT


def get_installed_vs_versions():
    base_str = "VisualStudio.DTE.%0.1f"
    versions_found = []
    for version in range(8, 15):  # support VS8-VS14, if convention continues
        try:
            RegOpenKeyEx(HKEY_CLASSES_ROOT, base_str % version)
            versions_found.append(version)
        except RegError:  # key not found, version not present.
            continue
    return versions_found


def get_latest_installed_vs_version():
    '''Returns the latest version of VisualStudio installed on the system'''
    return max(get_installed_vs_versions())

if __name__ == "__main__":
    print "Visual Studio %0.1f found" % get_latest_installed_vs_version()