Adding a comment to an image using PIL


J

Jeffrey Barish

I am trying to use PIL to add a comment to an image. I have never used PIL
before, but I discovered that it is possible to print an existing comment
with the following:

im = PIL.Image.open('filename.jpg')
print im.app['COM']

I figured that I could write a comment by reversing this procedure:

im.app['COM'] = 'New comment'
im.save('newfilename.jpg')

However, when I open newfilename.jpg, I find that key 'COM' does not
exist -- the comment is not being written. Presumably, I am doing
something wrong.
 
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