def set_book_read(id, read):
""" Changes whether a book has been read or not
:param id the ID of the book to change the read status
:param read True for book has been read, False otherwise
:raises BookError if book with given ID is not in the database
"""
rows_modified = Book.update(read=read).where(Book.id == id).execute()
if not rows_modified:
raise BookError(f'Book with id {id} not found')
