This code didn't show my picture. The picture really exists :) Does anybody know why this doesnt work? Thanks in advance!
from PIL import Image
im = Image.open("D:\\Python26\\PYTHON-PROGRAMME\\bild.jpg")
im.show()
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What was the error message? Do you have a stacktrace?rui– rui2009-12-30 17:30:24 +00:00Commented Dec 30, 2009 at 17:30
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there isn't any message in IDLE. The picture-viewer shows the message: picture is deleted or moved. But I think this is wrong. What is stacktrace?kame– kame2009-12-30 17:33:15 +00:00Commented Dec 30, 2009 at 17:33
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Is this the stacktrace? [('<string>', 1, '<module>', None), ('D:\\Python26\\lib\\idlelib\\run.py', 93, 'main', 'ret = method(*args, **kwargs)'), ('D:\\Python26\\lib\\idlelib\\run.py', 293, 'runcode', 'exec code in self.locals'), ('D:\\Python26\\PYTHON-PROGRAMME\\00000000000000000', 11, '<module>', 'x()'), ('D:\\Python26\\PYTHON-PROGRAMME\\00000000000000000', 5, 'x', 'print traceback.extract_stack()')]kame– kame2009-12-30 17:41:11 +00:00Commented Dec 30, 2009 at 17:41
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1Which version of Windows are you using? This works for me in XP, but looking at the implementation in Image.py, I feel that it's method of showing the image is brittle and may have broken in Vista/7Adam Crossland– Adam Crossland2009-12-30 17:56:06 +00:00Commented Dec 30, 2009 at 17:56
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1 Answer
You probably need to call the load() method to force the open() method to do its work. open is lazy.
Try:
from PIL import Image
im = Image.open("D:\\Python26\\PYTHON-PROGRAMME\\bild.jpg")
im.load()
im.show()
Idea #2: Patch PIL's file Image.py to have a potentially more robust approach to using the Windows shell to display your image. In the method _showxv, replace the following lines:
if os.name == "nt":
command = "start /wait %s && del /f %s" % (file, file)
with
if os.name == "nt":
command = "%s" % file
I suspect that the problem with the existing implementation is that the del command after the && is running immediately after the start command rather than after the result of the start command finishes. Thus, the file has already been deleted by the time that the image viewer is ready to load and display it.
Do back up your copy of the code before patching it.
3 Comments
kame
The picture-viewer shows the message: loading... :( But there isn't any picture.
Adam Crossland
I wouldn't fret too much about how well the show() method works. It is intended for debugging purposes, and based on the documentation's explanation of how it works (convert to a bitmap, save the bitmap to a temporary file, use default system viewer to show the temporary file) there are too many places where it could fail to be able to fix this. Instead, consider performing some transformations on the Image and then saving it to a new location. Open the new file manually. After all, you are using PIL to change an image in some way, right? You're not primarily using it simply to display images
kame
i didn`t want to change os.name now, because actually i didn't what it will change. for now I change the image, and save it under an other name. after this, I watch it with some picture-viewer. Thanks!