I/O error on quickstart

[Joris Gillis]

When trying to run the quickstart example,

from pymaging import Image

img = Image.open_from_path('myimage.png')
img = img.resize(300, 300)
img.save('resized.png')

the program halts with an I/O operation on closed file error.

It can be circumvented as follows:

Image.open(file('myimage.png','rb'))