Fix bug #784 Warnings related to PIL.Image samplers warnings

[Thomas-MMJ]

This fixes PIL.Image Resampler warnings, fixing bug #784

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint.

[kashif]

@Thomas-MMJ so these enums were added in version 9.1.0 and thus were potentially deemed too new to add as many places have older versions of PIL installed... you would also need to add the >= 9.1.0 requirements too in the PR

[kashif]

also see #588

[anton-l]

Indeed, let's keep this open until future PIL releases.

[patrickvonplaten]

What we usually do here is to do version dependent imports. Could we do the same here @Thomas-MMJ. E.g. could you add the following logic:

import PIL

if version.parse(version.parse(PIL.__version__).base_version) >= version.parse("9.1.0"):
    self.interpolation = {
            "linear": PIL.Image.Resampling.LINEAR,
            "bilinear": PIL.Image.Resampling.BILINEAR,
            "bicubic": PIL.Image.Resampling.BICUBIC,
            "lanczos": PIL.Image.Resampling.LANCZOS,
    }
else:
    self.interpolation = {
        "linear": PIL.Image.LINEAR,
        "bilinear": PIL.Image.BILINEAR,
        "bicubic": PIL.Image.BICUBIC,
        "lanczos": PIL.Image.LANCZOS,
    }

and could you use the same approach to all the other occurrences? This way we are safe for both PIL versions smaller than 9.1.0 and higher than 9.1.0.

[JunnYu]

@patrickvonplaten @Thomas-MMJ

when PIllow version >= 9.1.0 PIL.Image.Resampling donnot have LINEAR attr

PIL.Image.LINEAR == PIL.Image.BILINEAR == PIL.Image.Resampling.BILINEAR

[kashif]

you can try:

if version.parse(version.parse(PIL.__version__).base_version) >= version.parse("9.1.0"):
    self.interpolation = {
            "linear": PIL.Image.Resampling.BILINEAR,
            "bilinear": PIL.Image.Resampling.BILINEAR,
            "bicubic": PIL.Image.Resampling.BICUBIC,
            "lanczos": PIL.Image.Resampling.LANCZOS,
    }
else:
    self.interpolation = {
        "linear": PIL.Image.LINEAR,
        "bilinear": PIL.Image.BILINEAR,
        "bicubic": PIL.Image.BICUBIC,
        "lanczos": PIL.Image.LANCZOS,
    }

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[patrickvonplaten]

Think this is handled now by #1309 :-)