Comment convertir un paquet epub en epub normal ?

J'ai pris certains des commentaires ici et j'ai fourni un Bloc-notes Jupyter qui fait cela pour une sauvegarde de disons un répertoire de Livres :

import pathlib
import glob
import os
import zipfile

# Extract the relevant components of a full path
def pathComponents(fullpath):
    path = pathlib.Path(fullpath)
    name = path.name
    stem = path.stem
    suffix = path.suffix
    parent = path.parent
    return name, stem, suffix, parent

# Get directories in your path that have a .epub suffix
def getePubDirs(path):
    epubSearch = os.path.join(path, "*" + "." + "epub")
    eDirs=[]
    for p in glob.glob(epubSearch):
        if (os.path.isdir(p)):    # Only if it's an epub directory
            eDirs.append(p)
    return eDirs

def createZipFile(fname, files):
    zFile = zipfile.ZipFile(fname, mode='w', compression=zipfile.ZIP_DEFLATED)
    for f in files:
        zFile.write(f)
    zFile.close()

def convertDirToePub(dirname):
    name, stem, suffix, parent = pathComponents(dirname)        # get dirname details
    newdirname = zFile = str(parent) + "/" + name + ".ori"
    zFile = str(parent) + "/" + stem + ".epub"
    os.rename(dirname,newdirname)     # rename the epub dir so the epub can take its old name
    # get all the files within the epub directory
    os.chdir(newdirname) # We need to be in directory so the resultant epub paths are correct
    everything = [os.path.join(r,file) for r,d,f in os.walk(".") for file in f]
    createZipFile(zFile, everything)  # Create a zip file containing all those files
    os.chdir(parent)

dirtoconvert='/Users/<username>/tmp/Booksdir'

eDirs = getePubDirs(dirtoconvert)
totalDirs=len(eDirs)
print(totalDirs, "docs to convert")
ctr=1
for i in eDirs:
    print(ctr, "of", totalDirs, ": Converting ", i)
    convertDirToePub(i)
    ctr = ctr + 1
print("Done!")