wikipedia_quiz.py 文件源码

def retrieve_random_passage(page, length):
    """Given a wikipedia page and length, retrieves a random passage of text from
    the content of the wikipedia page with the given length.
    """
    content = page.content
    content_length = len(content)
    if length > content_length:
        length = content_length - 1
    start = random.randrange(len(content) - length)
    end = start + length
    return content[start:end]