def compose_book(self,r):
book = Book()
book.id = r['bid']
book.isbn10 = r['isbn10']
book.isbn13 = r['isbn13']
book.title = r['title']
book.subtitle = r['subtitle']
book.author = r['author']
book.translators = r['translators']
book.publisher = r['publisher']
book.pubdate = r['pubdate']
book.price = r['price']
book.pages = r['pages']
book.update_time = r['update_time']
book.create_time = r['create_time']
book.quantity = r['quantity']
book.series = r['series']
book.keywords = r['keywords']
book.summary = r['summary']
book.status = r['status']
book.transtr = book._transtr()
return book
