[REFORMAT] Ran black reformat

backend/core/database.py

@@ -10,6 +10,7 @@ Base = declarative_base()  # Used for models
 _engine = None
 _SessionLocal = None
 
+
 def get_engine():
     global _engine
     if _engine is None:
@@ -20,10 +21,13 @@ def get_engine():
         try:
             _engine.connect()
         except Exception:
-            raise Exception("Database connection failed. Is the database server running?")
+            raise Exception(
+                "Database connection failed. Is the database server running?"
+            )
         Base.metadata.create_all(_engine)  # Create tables here
     return _engine
 
+
 def get_sessionmaker():
     global _SessionLocal
     if _SessionLocal is None:
@@ -31,10 +35,11 @@ def get_sessionmaker():
         _SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
     return _SessionLocal
 
+
 def get_db() -> Generator[Session, None, None]:
     SessionLocal = get_sessionmaker()
     db = SessionLocal()
     try:
         yield db
     finally:
-        db.close()
+        db.close()