I'm beginner in ReportLab too.
Try this.
from reportlab.pdfgen import canvas
def hello(c):
c.drawString(100,100,"Hello World")
c = canvas.Canvas("hello.pdf")
hello(c)
c.showPage() #page1 end
hello(c)
c.showPage() #page2 end
c.save()
See serguide.pdf Page10 and Page14.
Toshio Onishi