代码

import PyPDF2


out_pdf = PyPDF2.PdfFileWriter()
dst_file = f'output.pdf'

with open('input.pdf', 'rb') as src_file:
	reader = PyPDF2.PdfFileReader(src_file)
	pages = reader.numPages

	for p in range(12):		# 这里是获取源PDF前12页，保存到新PDF文件
		out_pdf.addPage(reader.getPage(p))

		with open(dst_file, 'ab') as out:
			out_pdf.write(out)