first one

bot/app/db/base.py

@@ -0,0 +1,8 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+engine = create_engine("postgresql+psycopg2://user:password@postgres:5432/db")
+Session = sessionmaker(bind=engine)
+
+Base = declarative_base()