Change file structure

app/database/database_utils.py

@@ -0,0 +1,9 @@
+from app.database.model import User, db, RaceResult
+
+
+def race_has_result(race_name: str) -> bool:
+    return db.session.query(RaceResult).filter_by(race_name=race_name).first() is not None
+
+
+def user_exists(user_name: str) -> bool:
+    return db.session.query(User).filter_by(name=user_name).first() is not None