搭建期货量化管理后台 MVP，支持行情查看、博弈分析、持仓录入、品种合约管理

ft-app/app/database.py

@@ -0,0 +1,23 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker, DeclarativeBase
+from pathlib import Path
+
+DATA_DIR = Path(__file__).parent.parent / "data"
+DATA_DIR.mkdir(exist_ok=True)
+
+DATABASE_URL = f"sqlite:///{DATA_DIR / 'ft.db'}"
+
+engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
+SessionLocal = sessionmaker(bind=engine)
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()