Create EPUB3 Reader App in Python

Question

I am trying to create EPUB3 reader application in python for that I explored some python libraries like:

                i) Epubzilla
                ii) EbookLib
                iii) pyepub
                iv) epub 0.5.1

but I did't got perfect python API to render EPUB3 files. So I was thinking to use 'zipfile' will extract the containts of EPUB3 and will display accordingly but I don't want to extract EPUB3 file manually and display html,media file.

So please any one can suggest me that,

1) which way I need to follow to create EPUB3 reader application in python?

2) Is there any python library will give direct access of Epub3 file?