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AlphaFinance

Async, stateless Python library for market data

Type
Library
Built with
Python
Source
Private repository
Libraryprivate repo
AF
Redispytestsetuptools

Overview

An async-first, stateless Python library for downloading market data, built on curl_cffi for fast HTTP with browser-grade TLS fingerprinting.

Core features

async_download for OHLCV history across stocks, ETFs and funds; AsyncTicker and AsyncTickers for detailed ticker information; AsyncSearch; a stock screener with predefined and custom queries; sector and industry data; and runtime configuration. Results are plain Python objects (lists and dicts), with no pandas, NumPy, BeautifulSoup or lxml dependency.

Architecture

Native async/await throughout on curl_cffi.AsyncSession, with no in-object result caching: data is parsed, returned and released. The package is built with setuptools and includes a stress-test harness and a pytest suite. A built wheel (1.0.1) is kept alongside AnalyzeAlpha's platform service.

Frameworks, tools & libraries

The stack behind it

Tools & infrastructure

  • Redis
  • pytest
  • setuptools

Libraries

  • curl_cffi (async HTTP)
  • python-dateutil
  • pytz
  • redis-py

Skills applied

What I brought to it

  1. 01

    Async Python and HTTP client engineering

  2. 02

    TLS-fingerprinted scraping and resilient data fetching

  3. 03

    Stateless, low-memory library design

  4. 04

    Python packaging and wheels

  5. 05

    Stress testing for concurrency

Languages

What it's written in

  • Python~42 files

    library, tests and stress test

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