Sorted imports with isort.

examples/sqlalchemy/app.py

@@ -1,13 +1,12 @@
 #!/usr/bin/env python3
-import connexion
 import datetime
 import logging
 
+import connexion
 from connexion import NoContent
 
 import orm
 
-
 db_session = None
 
 def get_pets(limit, animal_type=None):