Add missing imports to example (#1569)

diff --git a/docs/build/naming.rst b/docs/build/naming.rst
index 55ccbde502b0015f177b512b01f1b4e16f645af8..89296343ea63634868499747eaa8f75f1f85f833 100644 (file)
--- a/docs/build/naming.rst
+++ b/docs/build/naming.rst
@@ -164,6 +164,8 @@ parameter in ``env.py``, which is normally configured when autogenerate is
 used::
 
     # in your application's model:
+    from sqlalchemy import MetaData
+    from sqlalchemy.orm import DeclarativeBase
 
     class Base(DeclarativeBase):
         metadata = MetaData(naming_convention={