from  PyPDF2 import  PdfFileReader,PdfFileWriter

读pdf=PdfFileReader(r'E:\pdf\python.pdf')
for  i in range(读pdf.getNumPages()):
    写pdf=PdfFileWriter()
    写pdf.addPage(读pdf.getPage(i))
    with  open('E:\pdf\{}.pdf'.format(i+1),'wb')  as  f:
        写pdf.write(f)