in seed/util/preprocess.py [0:0]
def split_pdf(input_path, output_path, pages):
pdf_document = fitz.open(input_path)
output_pdf = fitz.open()
for page_num in pages:
output_pdf.insert_pdf(pdf_document, from_page=page_num, to_page=page_num)
output_pdf.save(output_path)
output_pdf.close()
pdf_document.close()