reportlab

def categoria_print(self, pk=None):
    import io
    from reportlab.pdfgen import canvas
    from reportlab.lib.styles import getSampleStyleSheet
    from reportlab.lib import colors
    from reportlab.lib.pagesizes import letter, landscape


    if not pk:
         Categoria.objects.all().order_by('pk')
    else:
        Categoria.objects.filter(id=pk).order_by('pk').first()

    buff=io.BytesIO()
    response = HttpResponse(content_type='application/pdf')
    c = canvas.Canvas(buff,landscape(pagesize=letter))
    desc = Categoria.descripcion
    c.drawString(337,-470, desc)
    text = Categoria.activo

    c.drawString(337,-350,text)
    c.showPage()
    c.save()
    c= buff.getvalue()
    buff.close()
    response.write(c)
    return response