A program that splits a PDF document into multiple 15-page documents.

split.py

import sys
from PyPDF2 import PdfWriter, PdfReader

inputpdf = PdfReader(open("book_name.pdf", "rb"))

pages = list(range(0, len(inputpdf.pages)))
chunk_size = 15

page_chunks = [pages[i:i + chunk_size] for i in range(0, len(inputpdf.pages), chunk_size)]


chunk_count = 0
for chunk in page_chunks:
    chunk_count += 1
    output = PdfWriter()
    for page in chunk:
        output.add_page(inputpdf.pages[page])
    with open("document-chunk-{:02d}.pdf".format(chunk_count), "wb") as outputStream:
        output.write(outputStream)