code: def split_extension(pathname):
          
          filepart = win32.PathRemoveExtension(pathname)
          extpart  = win32.PathFindExtension(pathname)
          return (filepart, extpart)
docs: @type  pathname: str
          @param pathname: Absolute path.
  
          @rtype:  tuple( str, str )
          @return:
              Tuple containing the file and extension components of the filename.