convert using k2pdfopt to e-reader friendly format

convert.py

from subprocess import run
from multiprocessing import cpu_count
import os, click

@click.command()
@click.option('--source', default = "~/Phd/ereader")
@click.option('--target', default = "~/Calibre Library")
@click.option('--args', default = f"-as -w -ocr -nt {cpu_count()} -ocr -x -ui-")
def run_reader(source, target, args):
    eReaderConverter(source, target, args).convert()
    return 

class eReaderConverter:
    def __init__(self,
                 source,
                 target, 
                 convertargs):
        self.target = os.path.expanduser(target)
        self.source = os.path.expanduser(source)
        self.convertargs = "\t".join(i for i in convertargs.split())

    def convert(self):
        convert = self.novel_reads()
        # add full path
        convert = " ".join(str(os.path.join(self.source, i)) for i in convert)
        # run and move
        print(f"k2pdfopt\t{self.convertargs}\t{convert}".split('\t'))
        run(f"k2pdfopt\t{self.convertargs}\t{convert}".split('\t'))
        run(f"mv {os.path.join(self.target, '*k2pdfopt.*')} {self.source}".split())

    def novel_reads(self):
        toread    = set(os.listdir(self.source))
        on_reader = set(os.listdir(self.target))
        return toread - on_reader

if __name__ == "__main__":
    run_reader()