python2 env fix

Model/models.py

@@ -3,7 +3,8 @@ from itertools import chain
 from django.contrib.auth.models import BaseUserManager, AbstractBaseUser
 from django.db import models
 # from django.utils import six
-from django.utils.encoding import python_2_unicode_compatible
+# from django.utils.encoding import python_2_unicode_compatible
+from six import python_2_unicode_compatible
 from imagekit.models import ProcessedImageField
 from imagekit.processors import ResizeToFill
 import six