代码示例：假设文件内容为如下，需要按照title -> author -> text的顺序读取。

title: A Brief History of Time author: Stephen Hawking text: In this widely popular book, Hawking explores the complex topic of space, time and the universe.

title: To Kill a Mockingbird author: Harper Lee text: Set in the deep south during the 1930s, Harper Lee's Pulitzer Prize-winning novel follows the journey of a young girl as she navigates racial injustice and prejudice.

title: The Great Gatsby author: F. Scott Fitzgerald text: A timeless classic about a young, mysterious millionaire Jay Gatsby and his quest for love and wealth in the roaring twenties.

with open("books.txt", "r") as file: data = file.readlines()

books = []
book = {}

for line in data:
    
    # check if starting a new book
    if line.startswith('title:'):
        book = {}
        book['title'] = line.strip('title: ').strip('\n')
    elif line.startswith('author:'):
        book['author'] = line.strip('author: ').strip('\n')
    elif line.startswith('text:'):
        book['text'] = line.strip('text: ').strip('\n')
        books.append(book)
        
# read books in specific order
for book in books:
    print(book['title'])
    print(book['author'])
    print(book['text'])