Easy to extract all image from epub file. and extract highlight docs as note.

epub_image.py

import ebooklib
from ebooklib import epub

book = epub.read_epub('./Enterprise Security Architecture.epub')

for image in book.get_items_of_type(ebooklib.ITEM_IMAGE):
    with open('./test/{}'.format(image.file_name.split('/')[-1]),'wb') as im:
        im.write(image.content)

epub_note.py

import ebooklib
from ebooklib import epub
from bs4 import BeautifulSoup

book = epub.read_epub('./Enterprise Security Architecture.epub')

if __name__ == '__main__':
    ch_No = 0

    for doc in book.get_items_of_type(ebooklib.ITEM_DOCUMENT):
        if doc.get_name().startswith('K16265_C0'):
            sub_No = 0

            soup = BeautifulSoup(doc.get_content())
            p = soup.findAll('body')

            for tag in soup.find_all():
                if tag.name == 'h1':
                    ch_No = ch_No + 1
                    print('# {}. {}'.format(ch_No, tag.text))

                if tag.name == 'h2':
                    if not tag.text.startswith('To Summarise'):
                        sub_No = sub_No + 1
                        print('## {}.{}. {}'.format(ch_No, sub_No, tag.text))

                if tag.name == 'p':
                    italic = tag.find('span', 'cItalic')
                    if italic:
                        print('*',italic.get_text(strip=True).strip())