1. 读取 epub 电子书的内容

import ebooklib
from ebooklib import epub
from bs4 import BeautifulSoup

def get_html(book):
    htmls = list()
    for d in book.get_items_of_type(ebooklib.ITEM_DOCUMENT):
        htmls.append(d) # d 是一个 EpubHtml 类型的对象
    return htmls

filename = "abc.epub"
book = epub.read_epub(filename)

htmls = get_html(book)

for h in htmls:
    print(h.title, h.file_name) # 输出 html 的 title 和文件名

# 修改 html 中的内容
count = 0
for h in htmls:
    count += 1
    soup = BeautifulSoup(h.content, "html.parser")
    title = soup.find("title")
    title.string = str(count) + "." + title.get_text().string()

epub.write_epub("bcd.epub", book, {})

2. 创建电子书

来源：https://pypi.org/project/EbookLib/

from ebooklib import epub

book = epub.EpubBook()

# set metadata
book.set_identifier("id123456")
book.set_title("Sample book")
book.set_language("en")

book.add_author("Author Authorowski")
book.add_author(
    "Danko Bananko",
    file_as="Gospodin Danko Bananko",
    role="ill",
    uid="coauthor",
)

# create chapter
c1 = epub.EpubHtml(title="Intro", file_name="chap_01.xhtml", lang="hr")
c1.content = (
    "<h1>Intro heading</h1>"
    "<p>Zaba je skocila u baru.</p>"
    '<p><img alt="[ebook logo]" src="static/ebooklib.gif"/><br/></p>'
)

# create image from the local image
image_content = open("ebooklib.gif", "rb").read()
img = epub.EpubImage(
    uid="image_1",
    file_name="static/ebooklib.gif",
    media_type="image/gif",
    content=image_content,
)

# add chapter
book.add_item(c1)
# add image
book.add_item(img)

# define Table Of Contents
book.toc = (
    epub.Link("chap_01.xhtml", "Introduction", "intro"),
    (epub.Section("Simple book"), (c1,)),
)

# add default NCX and Nav file
book.add_item(epub.EpubNcx())
book.add_item(epub.EpubNav())

# define CSS style
style = "BODY {color: white;}"
nav_css = epub.EpubItem(
    uid="style_nav",
    file_name="style/nav.css",
    media_type="text/css",
    content=style,
)

# add CSS file
book.add_item(nav_css)

# basic spine
book.spine = ["nav", c1]

# write to the file
epub.write_epub("test.epub", book, {})

• book.spine 书籍的内容列表。每一个章节都要 append 在这个变量上面，不然无法在电子书阅读器上看到这个章节的内容
• book.toc 书籍的目录。通过目录可以跳转到指定的章节。可以都是 epub.Link。