kingchenc
24a9ff8244
Three blockers surfaced when the first tag actually ran the pipeline: 1. PyPI sdist build refused the `readme = "../../README.md"` path in bindings/python/pyproject.toml. maturin sdist forbids `..` inside archive entries. Solution: add a Python-specific README at bindings/python/README.md (covers the Python install + pointers to the main repo) and point the project.readme key at the local file. 2. Node publish job hit ENOENT on npm/<platform>/wickra.<...>.node because napi's per-platform scaffolding directories did not exist yet when `napi artifacts` ran. Insert `napi create-npm-dirs` as its own step before `napi artifacts` so the platform package layout is in place before binaries get moved into it. 3. and 4. (crates.io email + npm 2FA-bypass) are registry-side account settings that have to be done in the user's browser; no code change needed for those. They'll be sorted before the next tag push.
Wickra — Python bindings
Streaming-first technical indicators powered by a Rust core.
pip install wickra
Quick start
import numpy as np
import wickra as ta
# Batch — TA-Lib-style usage
prices = np.linspace(100, 200, 1000)
rsi = ta.RSI(14).batch(prices) # NumPy array; NaN during warmup
# Streaming — feed ticks one at a time
rsi = ta.RSI(14)
for price in live_prices:
v = rsi.update(price) # O(1) per tick
if v is not None and v > 70:
...
What's included
25 streaming-first indicators across four families. Every one passes a
batch == streaming equivalence test and reference-value tests:
- Trend — SMA, EMA, WMA, DEMA, TEMA, HMA, KAMA
- Momentum — RSI (Wilder), MACD, Stochastic, CCI, ROC, WilliamsR, ADX, MFI, TRIX, AwesomeOscillator, Aroon
- Volatility — BollingerBands, ATR, Keltner, Donchian, PSAR
- Volume — OBV, VWAP
Why streaming-first matters
Classic TA libraries are batch-only: every live tick triggers a full recomputation over the entire history. Wickra updates indicator state in O(1) per tick. On a 5K-bar history the streaming RSI gap is ~17× over the nearest peer with a streaming API and 100×+ over batch-only libraries.
Full project
See https://github.com/kingchenc/wickra for benchmarks, the Rust core, Node.js and WebAssembly bindings, examples, and CI.
License
Licensed under the PolyForm Noncommercial License 1.0.0. Personal, research, educational, and non-profit use are all permitted. Commercial sale requires a separate license — contact via the GitHub repo.