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-rw-r--r--sphinx/websupport/storage/sqlalchemystorage.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/sphinx/websupport/storage/sqlalchemystorage.py b/sphinx/websupport/storage/sqlalchemystorage.py
index ba011c06d..baef24816 100644
--- a/sphinx/websupport/storage/sqlalchemystorage.py
+++ b/sphinx/websupport/storage/sqlalchemystorage.py
@@ -11,9 +11,14 @@
from datetime import datetime
+import sqlalchemy
from sqlalchemy.orm import aliased
from sqlalchemy.sql import func
+if sqlalchemy.__version__[:3] < '0.5':
+ raise ImportError('SQLAlchemy version 0.5 or greater is required for this '
+ 'storage backend; you have version %s' % sqlalchemy.__version__)
+
from sphinx.websupport.errors import CommentNotAllowedError, \
UserNotAuthorizedError
from sphinx.websupport.storage import StorageBackend