Creating a book and its covers

The create_book function is responsible for creating a Book model instance and related BookCover instances. The list of covers is passed in the validate_data parameter under the key covers. A code review is required: ensure that the logic is implemented correctly, check for potential issues with performance or atomicity of the operation. Verify if covers are created properly, whether the use of the objs variable is justified, if using bulk_create makes sense, and if additional checks or wrapping in a transaction are necessary.

def create_book(validate_data: dict):
    covers: list[dict] = validate_data.pop('covers')
    book = Book.objects.create(**validate_data)
    objs = []
    for cover in covers:
        BookCover.objects.create(**cover, book=book)