[Tkinter] LANCZOS

[DPaul]

HI,
I have an app that uses (PIL) Image.LANCZOS while resizing a TIF file.
The app runs fine on windows 11. No messages.
It also runs fine on my laptop with windows 10. But it produces a warning message
that Image.LANCZOS is going to be deprecated in 2023 and replaced by : Image.Resampling.LANCZOS

When I replace Image.LANCZOS by Image.Resampling.LANCZOS, i get an error.
What should I try?
thx,
Paul

[Gribouillis]

You could try

try:
    from PIL.Image.Resampling import LANCZOS
except ModuleNotFoundError: # for pre 2023 versions of PIL
    import warnings
    with warnings.catch_warnings():
        from PIL.Image import LANCZOS

[DPaul]

Thanks Gribouillis.
Runs smoothly on win 11 and win 10.
Win 10 still produces the message:

Output:
Warning (from warnings module):
  File "C:\VVF\20220523\search.py", line 129
    resized_img = img.resize((newW,newH),Image.LANCZOS)
DeprecationWarning: LANCZOS is deprecated and will be removed in Pillow 10 (2023-07-01). Use Resampling.LANCZOS instead.

I also import PIL:

Output:
from PIL import ImageTk, Image

Not a big deal, but why refer to a release that is a year away?
thx,
Paul

[Gribouillis]

why refer to a release that is a year away?

Really I don't know why. You could define

def resize(img, *args, **kwargs):
    with warnings.catch_warnings():
        img.resize(*args, **kwargs)
...
resized_img = resize(img, Image.LANCZOS)

Aso perhaps a better solution in Warnings Control

[DPaul]

I have a partial explanation, but no solution yet.
1) Running win 11, no warning -->Pillow 9.0 was installed !
2) running win 10, warning --> Pillow 9.1 was installed !

I have upgraded both to 9.1.1, and now both give the warning.

I'll need to try the second suggestion. UPDATE: (tried it, still a warning)
thx,
Paul

[Gribouillis]

Read perhaps the pymotw3 about warnings for hints about how to silence these warnings.

[DPaul]

Read perhaps the pymotw3 about warnings for hints about how to silence these warnings.

After some trial and error, this seems to do the trick:

        with warnings.catch_warnings():
            warnings.simplefilter('ignore')
            resized_img = img.resize((newW,newH),Image.LANCZOS)

Paul