Here is my experience after following the hints on this page.

1. pyPDF can't embed images into files. It can only split and merge. (Source: Ctrl+F through its documentation page) Which is great, but not if you have images that are not already embedded in a PDF.

2. pyPDF2 doesn't seem to have any extra documentation on top of pyPDF.

3. ReportLab is very extensive. (Userguide) However, with a bit of Ctrl+F and grepping through its source, I got this:

   • First, download the Windows installer and source

   • Then try this on Python command line:

     from reportlab.pdfgen import canvas
     from reportlab.lib.units import inch, cm
     c = canvas.Canvas('ex.pdf')
     c.drawImage('ar.jpg', 0, 0, 10*cm, 10*cm)
     c.showPage()
     c.save()
     

All I needed is to get a bunch of images into a PDF, so that I can check how they look and print them. The above is sufficient to achieve that goal.

ReportLab is great, but would benefit from including helloworlds like the above prominently in its documentation.