How to use the scour.__version__ function in scour

def test_version(self):
        sys.argv.append('--version')

        result = self._run_scour()

        self.assertEqual(result.status, 0, "Execution of 'scour --version' erorred'")
        self.assertEqual(__version__ + "\n", result.stdout,  "Unexpected output of 'scour --version'")

def effect(self):
        try:
            input = file(self.args[0], "r")
            self.options.infilename = self.args[0]
            sys.stdout.write(scourString(input.read(), self.options).encode("UTF-8"))
            input.close()
            sys.stdout.close()
        except Exception as e:
            inkex.errormsg("Error during optimization.")
            inkex.errormsg("\nDetails:\n" + str(e))
            inkex.errormsg("\nOS version: " + platform.platform())
            inkex.errormsg("Python version: " + sys.version)
            inkex.errormsg("Scour version: " + scour.__version__)
            sys.exit()

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys, platform, inkex

try:
    import scour
    try:
        from scour.scour import scourString
    except ImportError:  # compatibility for very old Scour (<= 0.26) - deprecated!
        try:
            from scour import scourString
            scour.__version__ = scour.VER
        except:
            raise
except Exception as e:
    inkex.errormsg("Failed to import Python module 'scour'.\nPlease make sure it is installed (e.g. using 'pip install scour' or 'sudo apt-get install python-scour') and try again.")
    inkex.errormsg("\nDetails:\n" + str(e))
    sys.exit()

try:
    import six
except Exception as e:
    inkex.errormsg("Failed to import Python module 'six'.\nPlease make sure it is installed (e.g. using 'pip install six' or 'sudo apt-get install python-six') and try again.")
    inkex.errormsg("\nDetails:\n" + str(e))
    sys.exit()

class ScourInkscape (inkex.Effect):

try:
   import psyco
   psyco.full()
except ImportError:
   pass

# select the most precise walltime measurement function available on the platform
if sys.platform.startswith('win'):
   walltime = time.clock
else:
   walltime = time.time

from scour import __version__

APP = u'scour'
VER = __version__
COPYRIGHT = u'Copyright Jeff Schiller, Louis Simard, 2010'

NS = {'SVG':      'http://www.w3.org/2000/svg',
      'XLINK':    'http://www.w3.org/1999/xlink',
      'SODIPODI': 'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd',
      'INKSCAPE': 'http://www.inkscape.org/namespaces/inkscape',
      'ADOBE_ILLUSTRATOR': 'http://ns.adobe.com/AdobeIllustrator/10.0/',
      'ADOBE_GRAPHS': 'http://ns.adobe.com/Graphs/1.0/',
      'ADOBE_SVG_VIEWER': 'http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/',
      'ADOBE_VARIABLES': 'http://ns.adobe.com/Variables/1.0/',
      'ADOBE_SFW': 'http://ns.adobe.com/SaveForWeb/1.0/',
      'ADOBE_EXTENSIBILITY': 'http://ns.adobe.com/Extensibility/1.0/',
      'ADOBE_FLOWS': 'http://ns.adobe.com/Flows/1.0/',
      'ADOBE_IMAGE_REPLACEMENT': 'http://ns.adobe.com/ImageReplacement/1.0/',
      'ADOBE_CUSTOM': 'http://ns.adobe.com/GenericCustomNamespace/1.0/',
      'ADOBE_XPATH': 'http://ns.adobe.com/XPath/1.0/',