PDF File reverser

reverse.py

#!/usr/bin/env python2


from pyPdf import PdfFileReader, PdfFileWriter 
import sys
import getpass


if len(sys.argv) > 1:
    for filename in sys.argv[1:]:
        inputFile = PdfFileReader(file(filename, "rb"))
        output = PdfFileWriter()
        pages = inputFile.getNumPages()
        pageRange = range(pages)
        pageRange.reverse()
        for page in pageRange:
            output.addPage(inputFile.getPage(page))

        password = getpass.getpass("PDF password for output : ")
        if password is None:
            print("Using no password...")

        else:
            output.encrypt(user_pwd=password)

        stream = file("reverse_"+filename, "wb")
        output.write(stream)
        stream.close()

else:
    print("Usage : {0} filename".format(sys.argv[0]))