import sys
import PyPDF2

pdf_file = open("kos.pdf","rb")
pdfReader = PyPDF2.PdfFileReader(pdf_file)

pdfWriter = PyPDF2.PdfFileWriter()
pdfWriter.appendPagesFromReader(pdfReader)
pdfWriter.encrypt("password")

outfile = open("enc_kos_pdf","wb")
pdfWriter.write(outfile)


print "Hello"