[reportlab-users] Combining reportlab's PDF and pypdf to partially create, partially copy?

[Ken Corey]

Hi All,

I'm aiming to generate (on Google AppEngine in Python) a single PDF 
document made up of some sections created programatically, while others 
are existing PDF files on disk.

So, I tried a little function:

-------------------------------------------
class GetPDFPage(AllPages):
  def get(self):
    self.response.headers['Content-Type'] = 'application/pdf'

    p = Canvas(self.response.out)
    p.drawString(100, 750, "Hey, it's easy!.")

    p.showPage()
    p.save()

-------------------------------------------

It worked a treat!

So then I tried this:
-------------------------------------------
class GetPDFPage(AllPages):
  def get(self):
    self.response.headers['Content-Type'] = 'application/pdf'

    outputPDF = PdfFileWriter()
   
    p = Canvas(self.response.out)
    p.drawString(100, 750, "Hey, it's easy!.")

    p.showPage()
    p.save()

    pdfList = glob.glob( '*.pdf')
    for chapPdf in pdfList:
      pdfInput = PdfFileReader(file(chapPdf, "rb"))
      for i in xrange(pdfInput.getNumPages()):
        outputPDF.addPage(pdfInput.getPage(i))

    outputPDF.write(self.response.out)
-------------------------------------------

But the funny thing is that the output was *only* the files loaded from 
the disk, and the stuff generated by Canvas wasn't there at all.

Anyone know why?  Anyone know how to get around it so that I can crate a 
page using reportlabs, and then a few pages from existing PDF files, and 
then generate some more pages, and so on?

Thanks!

-Ken