使用python将多页pdf文件拆分为多个pdf文件？

from PyPDF2 import PdfFileWriter, PdfFileReaderinputpdf = PdfFileReader(open("document.pdf", "rb"))for i in range(inputpdf.numPages):    output = PdfFileWriter()    output.addPage(inputpdf.getPage(i))    with open("document-page%s.pdf" % i, "wb") as outputStream:        output.write(outputStream)

等等