from typing import Optional from pydantic import condecimal from sqlmodel import Field, Session, SQLModel, create_engine, select class Hero(SQLModel, table=True): id: Optional[int] = Field(default=None, primary_key=True) name: str = Field(index=True) secret_name: str age: Optional[int] = Field(default=None, index=True) money: condecimal(max_digits=5, decimal_places=3) = Field(default=0) sqlite_file_name = "database.db" sqlite_url = f"sqlite:///{sqlite_file_name}" engine = create_engine(sqlite_url, echo=True) def create_db_and_tables(): SQLModel.metadata.create_all(engine) def create_heroes(): hero_1 = Hero(name="Deadpond", secret_name="Dive Wilson", money=1.1) hero_2 = Hero(name="Spider-Boy", secret_name="Pedro Parqueador", money=0.001) hero_3 = Hero(name="Rusty-Man", secret_name="Tommy Sharp", age=48, money=2.2) with Session(engine) as session: session.add(hero_1) session.add(hero_2) session.add(hero_3) session.commit() def select_heroes(): with Session(engine) as session: statement = select(Hero).where(Hero.name == "Deadpond") results = session.exec(statement) hero_1 = results.one() print("Hero 1:", hero_1) statement = select(Hero).where(Hero.name == "Rusty-Man") results = session.exec(statement) hero_2 = results.one() print("Hero 2:", hero_2) total_money = hero_1.money + hero_2.money print(f"Total money: {total_money}") def main(): create_db_and_tables() create_heroes() select_heroes() if __name__ == "__main__": main()