33 lines
716 B
Python
33 lines
716 B
Python
|
from __future__ import annotations
|
||
|
|
|
||
|
|
from typing import Any, cast
|
||
|
|
|
||
|
|
from _typeshed import SupportsDunderGT, SupportsDunderLT
|
||
|
|
from sqlalchemy.orm import Session
|
||
|
|
|
||
|
|
from code_to_optimize.book_catalog import (
|
||
|
|
POSTGRES_CONNECTION_STRING,
|
||
|
|
Author,
|
||
|
|
Base,
|
||
|
|
Book,
|
||
|
|
_session,
|
||
|
|
_t,
|
||
|
|
authors,
|
||
|
|
authors_name,
|
||
|
|
engine,
|
||
|
|
init_table,
|
||
|
|
session_factory,
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def get_authors(session: Session) -> list[Author]:
|
||
|
|
books: list[Book] = session.query(Book).all()
|
||
|
|
_authors: list[Author] = []
|
||
|
|
book: Book
|
||
|
|
for book in books:
|
||
|
|
_authors.append(book.author)
|
||
|
|
return sorted(
|
||
|
|
list(set(_authors)),
|
||
|
|
key=lambda x: cast(SupportsDunderLT[Any] | SupportsDunderGT[Any], x.id),
|
||
|
|
)
|