--- a/__init__.py	Wed May 25 17:19:14 2016 +0200
+++ b/__init__.py	Wed Jun 01 15:36:18 2016 +0200
@@ -33,8 +33,9 @@
 
 CW_SOFTWARE_ROOT = __path__[0]
 
-import sys, os, logging
-if (2, 7) <= sys.version_info < (2, 7, 4):
+import sys
+import logging
+if PY2:
     # http://bugs.python.org/issue10211
     from StringIO import StringIO as BytesIO
 else: