sqlalchemy 2.0 formatting is broken. possible fix. #121

diff --git a/devtools/utils.py b/devtools/utils.py
index 994027e..2da806a 100644
--- a/devtools/utils.py
+++ b/devtools/utils.py
@@ -149,6 +149,13 @@ class DataClassType(metaclass=MetaDataClassType):

 class MetaSQLAlchemyClassType(type):
     def __instancecheck__(self, instance: 'Any') -> bool:
+        try:
+            from sqlalchemy.orm import DeclarativeBase  # type: ignore
+        except ImportError:
+            ...
+        else:
+            return isinstance(instance, DeclarativeBase)
+
         try:
             from sqlalchemy.ext.declarative import DeclarativeMeta  # type: ignore
         except ImportError: