ultralytics 8.4.43

v8.4.43 - `ultralytics 8.4.43` Fix NDJSON dataset validation (#24365)

on Python PyPI

🌟 Summary

Ultralytics v8.4.43 mainly improves dataset reliability by fixing how NDJSON and Ultralytics Platform (ul://.../datasets/...) datasets are resolved during validation, not just training ✅🚀

📊 Key Changes

• Major fix (PR #24365 by @glenn-jocher): unified NDJSON/Platform dataset handling

  • Added a shared resolver: convert_ndjson_to_yolo_if_needed() in ultralytics.data.utils.
  • Replaced trainer’s previous inline, train-only conversion with this shared function.
  • Applied the same conversion path in the validator so standalone validation now also resolves NDJSON and ul:// datasets correctly.
  • Added distributed-safe handling in validation flow to avoid race issues in multi-GPU/distributed runs. 🧩⚙️
  • Patch version bumped from 8.4.42 → 8.4.43.

• Docs update

  • New utility function is now documented in the data utils reference. 📚

• Minor cleanup (PR #24351 by @ahmet-f-gumustas)

  • Replaced redundant for ... in dict.keys() loops with direct dict iteration across several files.
  • No functional behavior change; this is a small code-quality/performance polish. 🧹

🎯 Purpose & Impact

• More consistent dataset behavior across train + val
  Users working with NDJSON or Ultralytics Platform datasets now get the same automatic conversion behavior in both stages, reducing surprises. ✅

• Fewer validation-time failures
  The key practical improvement is preventing validation setup issues when data is provided as .ndjson or ul://... URIs. This makes workflows more robust, especially when running validation independently. 🛡️

• Better stability in distributed environments
  The conversion step is now coordinated for multi-process runs, helping avoid duplicate or conflicting setup work. 🖥️🖥️

• Low upgrade risk
  Aside from the dataset-resolution fix, the rest is mostly internal cleanup with no intended user-facing behavior changes. 👍

What's Changed

• Remove redundant .keys() calls in dict iteration by @ahmet-f-gumustas in #24351
• ultralytics 8.4.43 Fix NDJSON dataset validation by @glenn-jocher in #24365

Full Changelog: v8.4.42...v8.4.43