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import uuid
from typing import Union
from sqlmodel import Field, Session, SQLModel, create_engine
class Hero(SQLModel, table=True):
id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
name: str = Field(index=True)
secret_name: str
age: Union[int, None] = Field(default=None, index=True)
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_hero():
with Session(engine) as session:
hero_1 = Hero(name="Deadpond", secret_name="Dive Wilson")
print("The hero before saving in the DB")
print(hero_1)
print("The hero ID was already set")
print(hero_1.id)
session.add(hero_1)
session.commit()
session.refresh(hero_1)
print("After saving in the DB")
print(hero_1)
def select_hero():
with Session(engine) as session:
hero_2 = Hero(name="Spider-Boy", secret_name="Pedro Parqueador")
session.add(hero_2)
session.commit()
session.refresh(hero_2)
hero_id = hero_2.id
print("Created hero:")
print(hero_2)
print("Created hero ID:")
print(hero_id)
selected_hero = session.get(Hero, hero_id)
print("Selected hero:")
print(selected_hero)
print("Selected hero ID:")
print(selected_hero.id)
def main() -> None:
create_db_and_tables()
create_hero()
select_hero()
if __name__ == "__main__":
main()
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