replace remaining read_image by decode_image

[tttiago]

Fixes #3501

Description

Replaced the read_image that was still remaining by decode_image.

Checklist

• The issue that is being fixed is referred in the description (see above "Fixes #ISSUE_NUMBER")
• Only one issue is addressed in this pull request
• Labels from the issue that this PR is fixing are added to this pull request
• No unnecessary issues are included into this pull request.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/tutorials/3516

• 📄 Preview Python docs built from this PR

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[sekyondaMeta]

@claude

[claude]

Claude finished @sekyondaMeta's task in 2m 17s —— View job

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PR Review: #3516

• Gather context and understand the PR changes
• Review the changes for correctness
• Check for remaining read_image usages across the repo
• Post review feedback

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Summary

This PR replaces a single remaining read_image call with decode_image in beginner_source/basics/data_tutorial.py, fixing issue #3501. The change in the PR's own commit (78b6b56) is correct and consistent — the file now uses decode_image everywhere, including the import statement, prose references, and all call sites.

Code Correctness

No concerns with the changed file. After the change, beginner_source/basics/data_tutorial.py consistently uses decode_image:

• Import at line 123: from torchvision.io import decode_image
• Usage at lines 137 and 193: image = decode_image(img_path)
• Prose reference at line 187 also mentions decode_image

Incomplete Scope

The PR title says "replace remaining read_image by decode_image", and the issue #3501 likely tracks all remaining usages. However, intermediate_source/torchvision_tutorial.py still has 7 occurrences of read_image that are not addressed:

Line	Usage
110	from torchvision.io import read_image
113	image = read_image("data/PennFudanPed/PNGImages/FudanPed00046.png")
114	mask = read_image("data/PennFudanPed/PedMasks/FudanPed00046_mask.png")
141	from torchvision.io import read_image
160	img = read_image(img_path)
161	mask = read_image(mask_path)
493	image = read_image("data/PennFudanPed/PNGImages/FudanPed00046.png")

These should likely be updated in this PR as well to fully resolve the issue.

Structure & Formatting

No concerns — this is a single-line code change with no structural impact.

Build Compatibility

No concerns — decode_image is the current recommended API in torchvision and is already used elsewhere in the codebase.

Recommendation

Request Changes

The change itself is correct, but the PR should also update intermediate_source/torchvision_tutorial.py to replace its 7 remaining read_image calls with decode_image. Without that, the goal of removing all read_image usage (as stated in the PR title and issue) is only partially achieved.

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