ultralytics 8.3.252

v8.3.252 - `ultralytics 8.3.252` Fix TQDM duplicate 100% states (#23158)

on Python PyPI

🌟 Summary

v8.3.252 polishes Ultralytics console output by fixing a tqdm progress-bar issue that could print “100% complete” twice ✅📈

📊 Key Changes

• 🧹 Fix duplicated final progress-bar render (PR #23158): adds a safeguard in ultralytics/utils/tqdm.py to skip the final “complete” redraw if 100% was already printed.
• 🧠 Export reliability improvement: resets cached export input shape (m.shape = None) in ultralytics/engine/exporter.py to avoid stale shapes when exporting with a new image size 📦
• 🔗 Cleaner Ultralytics HUB / platform run URLs: adds slugify() plus _get_project_name() in ultralytics/utils/callbacks/platform.py so project/run names become URL-safe (better logging links, fewer weird characters) 🌐
• 🧾 Docs + examples default tuning (PR #23157):
  • 🚶 Tracking examples updated to conf=0.1 and iou=0.7 (more typical tracking behavior)
  • 🔍 Predict examples updated to conf=0.25
  • ✅ Val examples aligned to iou=0.7
  • 📊 Docs macros updated (e.g., plots/verbose defaults shown as True in places; FP16 half shown as False for validation docs)
  • 📦 Export docs clarify INT8 calibration fallback uses coco8.yaml when data isn’t provided
• 🧩 Tracing/export warning reduction: make_anchors() in ultralytics/utils/tal.py iterates over len(feats) instead of directly iterating a strides tensor to avoid TracerWarning during tracing 🛠️

🎯 Purpose & Impact

• ✅ Cleaner logs & CI output: eliminates confusing duplicate “100%” progress-bar lines, making training/validation logs easier to read (especially in automated pipelines) 🧾
• 📦 More predictable exports: reduces the chance of exporting with an unintended cached shape when changing imgsz, improving export consistency across runs 🔁
• 🌐 More robust platform/HUB streaming links: URL-safe project/run names reduce broken links and improve readability when streaming training updates 📡
• 📚 Better defaults in documentation: examples now reflect more practical thresholds, helping new users get reasonable results faster without “why is nothing detected/tracked?” confusion 🎯

What's Changed

• Fix documentation arg defaults by @glenn-jocher in #23157
• ultralytics 8.3.252 Fix TQDM duplicate 100% states by @glenn-jocher in #23158

Full Changelog: v8.3.251...v8.3.252