nano-duration

Tiny h/m/s ↔ seconds converter — ~1 KB, zero deps. Single-file, CLI included. Perfect for code-golf, minimal containers, or just for fun.

✨ Features

• ✅ 2h 15m 3s → 8103 (seconds)
• ✅ 8103 → 2h15m3s
• ✅ Accepts spaces/hybrids ("1h5m", "90s", " 2H "), case-insensitive
• ✅ Zero dependencies, single tiny file

🚀 Usage

# Local (from repo)
python app_min.py "1h 5m 2s"   # 3902
python app_min.py 3902         # 1h5m2s
python app_min.py 90           # 1m30s

After installing:

# CLI
pip install nano-duration
nano-duration "2h 15m 3s"      # 8103
nano-duration 8103             # 2h15m3s

🤓 Why so small?

• Minimal regex ((\d+)\s*([hms])) + tiny map {h:3600,m:60,s:1}
• No heavy parsing; simple greedy division for formatting
• Single module + tiny CLI wrapper

🎉 Fun Ideas

• Sum durations in shell

echo $(( $(nano-duration "1h 2m") + $(nano-duration "35m") ))
# -> 5820

• Convert logs to readable

awk '{print $1}' times.txt | xargs -I{} nano-duration {}  # each line seconds→hms

Notes Only h/m/s units are supported (no days/ms). Negative values are not recommended.

📜 License

MIT © 2025