Python库提取'epub'信息

Question

我正在尝试在python中为iBook创建一个epub上传器.我需要一个python lib来提取书籍信息.在我自己实现之前,我想知道是否有人知道已经制作的python库.

Answer 1

.epub文件是一个包含META-INF目录的zip编码文件,其中包含一个名为container.xml的文件,该文件指向另一个通常名为Content.opf的文件,该文件对构成电子书的所有其他文件编制索引. (摘要基于http://www.jedisaber.com/eBooks/tutorial.asp ;完整规范,网址为http://www.idpf.org/2007/opf/opf2.0/download/)

以下Python代码将从.epub文件中提取基本元信息并将其作为dict返回.

import zipfile
from lxml import etree

def get_epub_info(fname):
    ns = {
        'n':'urn:oasis:names:tc:opendocument:xmlns:container',
        'pkg':'http://www.idpf.org/2007/opf',
        'dc':'http://purl.org/dc/elements/1.1/'
    }

    # prepare to read from the .epub file
    zip = zipfile.ZipFile(fname)

    # find the contents metafile
    txt = zip.read('META-INF/container.xml')
    tree = etree.fromstring(txt)
    cfname = tree.xpath('n:rootfiles/n:rootfile/@full-path',namespaces=ns)[0]

    # grab the metadata block from the contents metafile
    cf = zip.read(cfname)
    tree = etree.fromstring(cf)
    p = tree.xpath('/pkg:package/pkg:metadata',namespaces=ns)[0]

    # repackage the data
    res = {}
    for s in ['title','language','creator','date','identifier']:
        res[s] = p.xpath('dc:%s/text()'%(s),namespaces=ns)[0]

    return res

样本输出:

{
    'date': '2009-12-26T17:03:31',
    'identifier': '25f96ff0-7004-4bb0-b1f2-d511ca4b2756',
    'creator': 'John Grisham',
    'language': 'UND',
    'title': 'Ford County'
}