new_contents: # Using the os.walk() function, write a script that will go through every PDF
  # in a folder (and its subfolders) and encrypt the PDFs using a password provided
  # on the command line. Save each encrypted PDF with an _encrypted.pdf suffix added
  # to the original filename.
  #
  # Before deleting the original file, have the program attempt to read and decrypt the
  # file to ensure that it was encrypted correctly.
  
subject: Initialize P1_encryptPDFparanoia