点击上方“Deephub Imba”,关注公众号,好文章不错过 !loguru、pydantic、httpx都是很好用的库，这篇文章整理的是另一类：多数开发者不知道它们存在，却在不少资深工程师的 requirements.txt ...

alphasignal/ ├── data_ingestion/ # Market data fetching & feature engineering │ ├── fetcher.py # Yahoo Finance, Alpha Vantage, Polygon.io │ └── features.py # RSI, MACD, Bollinger Bands, EMA, ATR, OBV ...

/src /api # FastAPI routes ├── documents.py # PDF ingestion endpoints ├── rag.py # RAG query endpoints ├── analytics.py # Analytics endpoints └── health.py # Health check endpoints /core # Core ...