choose config parser module based on python version

pgfw/Configuration.py

@@ -1,10 +1,13 @@
 from os import sep, getcwd
 from os.path import join, exists, basename, dirname, expanduser
-from sys import argv
+from sys import argv, version_info
 from re import match
 from pprint import pformat
 
-from ConfigParser import RawConfigParser
+if version_info[0] >= 3:
+    from configparser import RawConfigParser
+else:
+    from ConfigParser import RawConfigParser
 
 class Configuration(RawConfigParser):