pytest (#209)

passbook/providers/oauth2/models.py

@@ -14,7 +14,7 @@ from django.forms import ModelForm
 from django.http import HttpRequest
 from django.shortcuts import reverse
 from django.utils import dateformat, timezone
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from jwkest.jwk import Key, RSAKey, SYMKey, import_rsa_key
 from jwkest.jws import JWS