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from typing import Optional
from sqlmodel import Field, Session, SQLModel, create_engine, select # (1)!
class Hero(SQLModel, table=True): # (2)!
id: Optional[int] = Field(default=None, primary_key=True)
name: str
secret_name: str
age: Optional[int] = None
sqlite_file_name = "database.db"
sqlite_url = f"sqlite:///{sqlite_file_name}"
engine = create_engine(sqlite_url, echo=True) # (3)!
def create_db_and_tables():
SQLModel.metadata.create_all(engine) # (4)!
def create_heroes():
hero_1 = Hero(name="Deadpond", secret_name="Dive Wilson") # (5)!
hero_2 = Hero(name="Spider-Boy", secret_name="Pedro Parqueador")
hero_3 = Hero(name="Rusty-Man", secret_name="Tommy Sharp", age=48)
with Session(engine) as session: # (6)!
session.add(hero_1)
session.add(hero_2)
session.add(hero_3)
session.commit()
def select_heroes():
with Session(engine) as session: # (7)!
statement = select(Hero) # (8)!
results = session.exec(statement) # (9)!
for hero in results: # (10)!
print(hero) # (11)!
# (12)!
def main():
create_db_and_tables()
create_heroes()
select_heroes() # (13)!
if __name__ == "__main__":
main()
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