. . .
def informe_peliculas(request):
    response = HttpResponse(content_type='application/pdf')
    response['Content-Disposition'] = 'attachment; filename="peliculas.pdf"'

    buffer = BytesIO()

    can = canvas.Canvas(buffer)
    can.drawString(200, 800, "Peliculas")

    peliculas = Pelicula.objects.all()
    y = 700
    for pelicula in peliculas:
        can.drawString(50, y, pelicula.titulo)
        y -= 20

    can.showPage()
    can.save()

    pdf = buffer.getvalue()
    buffer.close()
    response.write(pdf)

    return response
. . .