old_contents: """Write PDF
  
  This program uses :py:mod:`PyPDF4` to write PDF documents.
  
  Note:
      * Example PDFs can be downloaded from http://nostarch.com/automatestuff/
      * Book uses PyPDF2; I'm an overachiever that uses PyPDF4
  
  """
  
  
  def main():
      import PyPDF4
  
      # Copying Pages
      pdf1File = open("meetingminutes.pdf", "rb")
      pdf2File = open("meetingminutes2.pdf", "rb")
      pdf1Reader = PyPDF4.PdfFileReader(pdf1File)
      pdf2Reader = PyPDF4.PdfFileReader(pdf2File)
      pdfWriter = PyPDF4.PdfFileWriter()
  
      for pageNum in range(pdf1Reader.numPages):
          pageObj = pdf1Reader.getPage(pageNum)
          pdfWriter.addPage(pageObj)
  
      for pageNum in range(pdf2Reader.numPages):
          pageObj = pdf2Reader.getPage(pageNum)
          pdfWriter.addPage(pageObj)
  
      pdfOutputFile = open("combinedminutes.pdf", "wb")
      pdfWriter.write(pdfOutputFile)
      pdfOutputFile.close()
      pdf1File.close()
      pdf2File.close()
  
      # Rotating Pages
      minutesFile = open("meetingminutes.pdf", "rb")
      pdfReader = PyPDF4.PdfFileReader(minutesFile)
      page = pdfReader.getPage(0)
      print(page.rotateClockwise(90))
  
      pdfWriter = PyPDF4.PdfFileWriter()
      pdfWriter.addPage(page)
      resultPdfFile = open("rotatedPage.pdf", "wb")
      pdfWriter.write(resultPdfFile)
      resultPdfFile.close()
      minutesFile.close()
  
      # Overlaying Pages
      minutesFile = open("meetingminutes.pdf", "rb")
      pdfReader = PyPDF4.PdfFileReader(minutesFile)
      minutesFirstPage = pdfReader.getPage(0)
      pdfWatermarkReader = PyPDF4.PdfFileReader(open("watermark.pdf", "rb"))  # lol
      minutesFirstPage.mergePage(pdfWatermarkReader.getPage(0))
      pdfWriter = PyPDF4.PdfFileWriter()
      pdfWriter.addPage(minutesFirstPage)
  
      for pageNum in range(1, pdfReader.numPages):
          pageObj = pdfReader.getPage(pageNum)
          pdfWriter.addPage(pageObj)
      resultPdfFile = open("watermarkedCover.pdf", "wb")
      pdfWriter.write(resultPdfFile)
      minutesFile.close()
      resultPdfFile.close()
  
      # Encrypting PDFs
      pdfFile = open("meetingminutes.pdf", "rb")
      pdfReader = PyPDF4.PdfFileReader(pdfFile)
      pdfWriter = PyPDF4.PdfFileWriter()
      for pageNum in range(pdfReader.numPages):
          pdfWriter.addPage(pdfReader.getPage(pageNum))
  
      pdfWriter.encrypt("swordfish")
      resultPdf = open("encryptedminutes.pdf", "wb")
      pdfWriter.write(resultPdf)
      resultPdf.close()
  
  
  if __name__ == '__main__':
      main()
  
new_contents: """Write PDF
  
  This program uses PyPDF4 to write PDF documents.
  
  Note:
      * Example PDFs can be downloaded from http://nostarch.com/automatestuff/
      * Book uses :py:mod:`PyPDF2`; I'm an overachiever that uses PyPDF4
  
  """
  
  
  def main():
      import PyPDF4
  
      # Copying Pages
      pdf1File = open("meetingminutes.pdf", "rb")
      pdf2File = open("meetingminutes2.pdf", "rb")
      pdf1Reader = PyPDF4.PdfFileReader(pdf1File)
      pdf2Reader = PyPDF4.PdfFileReader(pdf2File)
      pdfWriter = PyPDF4.PdfFileWriter()
  
      for pageNum in range(pdf1Reader.numPages):
          pageObj = pdf1Reader.getPage(pageNum)
          pdfWriter.addPage(pageObj)
  
      for pageNum in range(pdf2Reader.numPages):
          pageObj = pdf2Reader.getPage(pageNum)
          pdfWriter.addPage(pageObj)
  
      pdfOutputFile = open("combinedminutes.pdf", "wb")
      pdfWriter.write(pdfOutputFile)
      pdfOutputFile.close()
      pdf1File.close()
      pdf2File.close()
  
      # Rotating Pages
      minutesFile = open("meetingminutes.pdf", "rb")
      pdfReader = PyPDF4.PdfFileReader(minutesFile)
      page = pdfReader.getPage(0)
      print(page.rotateClockwise(90))
  
      pdfWriter = PyPDF4.PdfFileWriter()
      pdfWriter.addPage(page)
      resultPdfFile = open("rotatedPage.pdf", "wb")
      pdfWriter.write(resultPdfFile)
      resultPdfFile.close()
      minutesFile.close()
  
      # Overlaying Pages
      minutesFile = open("meetingminutes.pdf", "rb")
      pdfReader = PyPDF4.PdfFileReader(minutesFile)
      minutesFirstPage = pdfReader.getPage(0)
      pdfWatermarkReader = PyPDF4.PdfFileReader(open("watermark.pdf", "rb"))  # lol
      minutesFirstPage.mergePage(pdfWatermarkReader.getPage(0))
      pdfWriter = PyPDF4.PdfFileWriter()
      pdfWriter.addPage(minutesFirstPage)
  
      for pageNum in range(1, pdfReader.numPages):
          pageObj = pdfReader.getPage(pageNum)
          pdfWriter.addPage(pageObj)
      resultPdfFile = open("watermarkedCover.pdf", "wb")
      pdfWriter.write(resultPdfFile)
      minutesFile.close()
      resultPdfFile.close()
  
      # Encrypting PDFs
      pdfFile = open("meetingminutes.pdf", "rb")
      pdfReader = PyPDF4.PdfFileReader(pdfFile)
      pdfWriter = PyPDF4.PdfFileWriter()
      for pageNum in range(pdfReader.numPages):
          pdfWriter.addPage(pdfReader.getPage(pageNum))
  
      pdfWriter.encrypt("swordfish")
      resultPdf = open("encryptedminutes.pdf", "wb")
      pdfWriter.write(resultPdf)
      resultPdf.close()
  
  
  if __name__ == '__main__':
      main()
  
subject: Update P2_writePDF.py moved module reference from PyPDF4 to PyPDF2