errorTraceback (most recent call last):
  File "./imagefac/views.py", line 44, in ImageScale
    im = Image.open(file)
  File "/usr/lib64/python2.7/site-packages/PIL/Image.py", line 2818, in open
    raise IOError("cannot identify image file %r" % (filename if filename else fp))
IOError: cannot identify image file <cStringIO.StringI object at 0x7fc8e1f75cf0>
 url=http://art.bandao.cn