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Fix #39: Add compatibility with >=pillow-7.0.0 #54

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merged 1 commit into from Nov 9, 2019
Merged

Fix #39: Add compatibility with >=pillow-7.0.0 #54

merged 1 commit into from Nov 9, 2019

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ConiKost
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@ConiKost ConiKost commented Oct 23, 2019

Changed PILLOW_VERSION to PIL.version,
as it got removed with >=pillow-7.0.0.

In order not to break compatibility with older versions,
PILLOW_VERSION will be used as a fallback.

Closes: #39
Signed-off-by: Conrad Kostecki conrad@kostecki.com

@Eddi-z
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@Eddi-z Eddi-z commented Oct 23, 2019

Commit message should probably start with "Fix #39: ..."

Also, does it still work with older pillow, or is this a new minimum requirement?

@ConiKost
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@ConiKost ConiKost commented Oct 23, 2019

Also, does it still work with older pillow, or is this a new minimum requirement?

At least, with version 6.x is working. I can't test version 5 and older. But If I understand the docs correctly, it should be the case.

@ConiKost ConiKost changed the title Add compatibility with >=pillow-7.0.0 Fix #39: Add compatibility with >=pillow-7.0.0 Oct 23, 2019
nml/version_info.py Outdated Show resolved Hide resolved
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@planetmaker planetmaker left a comment

That patch does not fly as it breaks nml for older versions of PIL / pillow:

nmlc ERROR: nmlc: An internal error has occurred:
nmlc-version: 2019-10-23-g909c09fd
Error: (AttributeError) "module 'PIL.Image' has no attribute 'version'".
Command: ['/home/ingo/bin/nmlc', '--version']
Location: File "/home/ingo/ottd/grfdev/nml/nml/version_info.py", line 142, in get_lib_versions

PIL: 1.1.7
PLY: 3.9

@ConiKost
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@ConiKost ConiKost commented Oct 23, 2019

Thanks. But PILLOW_VERSION, as in current master, works for you?

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@planetmaker planetmaker commented Oct 23, 2019

Thanks. But PILLOW_VERSION, as in current master, works for you?

Yes:
78cd84c+* ± nmlc --version
2019-10-20-g78cd84ce
Library versions encountered:
PLY: 3.9
PIL: 4.0.0
78cd84c+* ± python3 -V
Python 3.5.3

@ConiKost
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@ConiKost ConiKost commented Oct 23, 2019

@planetmaker Could you try latest variant?

Changed PILLOW_VERSION to PIL.__version__,
as it got removed with >=pillow-7.0.0.

In order not to break compatibility with older versions,
PILLOW_VERSION will be used as a fallback.

Closes: #39
Signed-off-by: Conrad Kostecki <conrad@kostecki.com>
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@planetmaker planetmaker commented Oct 23, 2019

@planetmaker Could you try latest variant?

It's PILLOW_VERSION (you are missing one L). That fixed it works for me.

@ConiKost
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@ConiKost ConiKost commented Oct 23, 2019

It's PILLOW_VERSION (you are missing one L). That fixed it works for me.

already fixed ;-)

@matthijskooijman
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@matthijskooijman matthijskooijman commented Oct 29, 2019

That patch does not fly as it breaks nml for older versions of PIL / pillow:
PIL: 1.1.7

But the README says the minimum supported pillow version is 5.2, so why is this relevant? It will (I expect) then just break elsewhere? Or are older versions actually supported after all?

@ConiKost
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@ConiKost ConiKost commented Oct 29, 2019

PIL =! Pillow. Version 1.1.7 is for historic reasons.

Pillow 5.2.0 also reports 1.1.7 with PIL.VERSION.
-> https://pillow.readthedocs.io/en/stable/releasenotes/5.2.0.html

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@matthijskooijman matthijskooijman commented Nov 5, 2019

PIL =! Pillow. Version 1.1.7 is for historic reasons.

Ah, of course, I misread the comment then. @planetmaker, what pillow version were you using when you posted:

Error: (AttributeError) "module 'PIL.Image' has no attribute 'version'".

Looking more closely, it seems this PR now uses PIL.Image.__version (which is apparently not available in the version the @planetmaker tested). However, IIUC, the docs recommend using PIL.__version__ instead, which should be available since version 3.4 (see also #39 (comment))

@LordAro LordAro merged commit 70c0b31 into OpenTTD:master Nov 9, 2019
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@matthijskooijman matthijskooijman commented Nov 9, 2019

@LordAro I'm not actually sure that the code is now checking the right (or at least recommended) version number, see my previous comment. @ConiKost, what do you think?

@ConiKost
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@ConiKost ConiKost commented Nov 9, 2019

@matthijskooijman I guess, it depends on the specific version, which he has.

But currently, as far I understand the code, both, PIL.Image.__version__ and PIL.__version__ are tried, before doing a fallback. So this should be fine, as it is?

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@matthijskooijman matthijskooijman commented Nov 10, 2019

AFAICS, PIL.__version__ is never tried, only PIL.Image.__version__ and Image.__version__.

nml/nml/version_info.py

Lines 140 to 154 in abb7a3a

try:
from PIL import Image
try:
versions["PIL"] = Image.__version__
except AttributeError:
versions["PIL"] = Image.PILLOW_VERSION
except ImportError:
try:
import Image
try:
versions["PIL"] = Image.__version__
except AttributeError:
versions["PIL"] = Image.PILLOW_VERSION
except ImportError:
versions["PIL"] = "Not found!"

Looking at the code gain, I also wonder if the fallback to import Image is still needed? I haven't looked in detail, but before I found that PIL.__version__ was introduced in pillow 3.4.0 (python-pillow/Pillow@7bfb252) and it seems that PIL.Image was also available already in that version (and the minimium pillow version for nml is now 5.something, right?).

@ConiKost
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@ConiKost ConiKost commented Nov 11, 2019

FWICS, you seem to be right, that import Image could not be needed anymore.
About version 5, I wasn't the one, who said said ;-) I only was asked, to add 5.2 as a minimum version, so I did. I don't know the code, so I can't judge on that.

matthijskooijman added a commit to matthijskooijman/nml that referenced this issue Nov 17, 2019
Previously, this tried various combinations of version variables.
However, some of these are deprecated by Pillow and the 6.0.0 release
notes recommend simply using `PIL.__version` instead. This attribute is
available since Pillow 3.4.0, so there is no need for any compatibility
fallbacks.

This relates to OpenTTD#29, OpenTTD#39 and OpenTTD#54.
@matthijskooijman
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@matthijskooijman matthijskooijman commented Nov 17, 2019

Thanks. I've opened PR #59 further simplifying the Pillow imports. As for the minimum version, I've opened issue #58 for that.

matthijskooijman added a commit to matthijskooijman/nml that referenced this issue Nov 29, 2019
Previously, this tried various combinations of version variables.
However, some of these are deprecated by Pillow and the 6.0.0 release
notes recommend simply using `PIL.__version` instead. This attribute is
available since Pillow 3.4.0, so there is no need for any compatibility
fallbacks.

This relates to OpenTTD#29, OpenTTD#39 and OpenTTD#54.
LordAro pushed a commit that referenced this issue Nov 29, 2019
Previously, this tried various combinations of version variables.
However, some of these are deprecated by Pillow and the 6.0.0 release
notes recommend simply using `PIL.__version` instead. This attribute is
available since Pillow 3.4.0, so there is no need for any compatibility
fallbacks.

This relates to #29, #39 and #54.
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5 participants