python使用reportlab实现图片转换成pdf的方法

#!/usr/bin/env python
import os
import sys
from reportlab.lib.pagesizes import A4, landscape
from reportlab.pdfgen import canvas
f = sys.argv[1]
filename = ''.join(f.split('/')[-1:])[:-4]
f_jpg = filename+'.jpg'
print f_jpg
def conpdf(f_jpg):
  f_pdf = filename+'.pdf'
  (w, h) = landscape(A4)
  c = canvas.Canvas(f_pdf, pagesize = landscape(A4))
  c.drawImage(f, 0, 0, w, h)
  c.save()
  print "okkkkkkkk."
conpdf(f_jpg)