$ pip install bookleter
$ bookleter [pdfname] [start_page-end_page] [direction: rtl ltr] [page crop: '50 50 50 50']
direction: right to left (rtl) or left to right (ltr)
page crop: amount of page border crop in pixels 'left top right bottom'
$ bookleter my_book.pdf 1-30 rtl '50 50 50 50'
$ bookleter