def test_something(self): fp = open('/home/zhenghuabin/images/37d12f2eb9389b5054c9b3608635e5dde7116ec9.jpg', 'r') im = Image.open(fp) print im.format outf = StringIO() im.save(outf, "JPEG") data = outf.getvalue() print(len(data)) clip = TClip(width = 50, height = 50) (ret, rc) = clip.process_buffer(data) if ret is None: print rc else: print("type: %d" % rc) out2 = open('/home/zhenghuabin/tt.jpeg', 'w') out2.write(ret) self.assertEqual(True, True)