Ccxtex 0.1 released: call ccxt library from Elixir/Erlang

I'm releasing Ccxtex 0.1, a first version of FLOSS Elixir package for Elixir/Erlang interoperability with python version of ccxt library. Ccxt provides unified API for fetching of historical data and trading operations for multiple cryptocurrency exchanges including GDAX, Bitfinex, Poloniex, Binance and others.

<h1><a href="https://github.com/cyberpunk-ventures/ccxtex" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">Ccxtex repo and docs <h2>Installation <h3>Elixir <p dir="auto">Add the following line to your package mix.exs: <pre><code>def deps do [ {:ccxtex, github: "cyberpunk-ventures/ccxtex"} ] end <h3>Python <p dir="auto">You need Python 3 and <a href="https://pypi.org/project/ccxt/" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">ccxt python package installed for this module to work. <p dir="auto">To install ccxt use <code>pip3 install ccxt <p dir="auto">Python interop is implemented with Erlport and Export libraries. <h2>Status and roadmap <p dir="auto">Ccxtex is usable, but is under active development, API is unstable and will change. Some exchanges do not support all methods/require CORS/have other esoteric requirements. Please consult <a href="https://github.com/ccxt/ccxt" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">ccxt documentation for more. <h3>Public APIs in progress <ul> <li>[x] fetch_ticker <li>[x] fetch_ohlcv <li>[x] fetch_exchanges <li>[x] fetch_markets <li>[ ] fetch_trades <li>[ ] fetch_order_book <li>[ ] fetch_l2_order_book <h3>Developer experience improvements <ul> <li>[ ] unified public API call option structs <li>[ ] integrate python 3 async calls and remove a pid arg from module functions <li>[ ] capture exceptions generated by ccxt python library and convert to elixir success tuples <h3>Private APIs implementation are under consideration <h2>Examples <p dir="auto"><span>Default process id (<a href="/@pid">@pid) is Ccxtex.Port. You can always start and use another process with Ccxtex.Port.start_link/2 <h3>Fetch exchanges <p dir="auto">Usage:<br /> <code>exchanges = Ccxtex.fetch_exchanges(Ccxtex.Port) <pre><code>[ ... %{ has: %{ cancel_order: true, cancel_orders: false, cors: false, create_deposit_address: true, create_limit_order: true, create_market_order: false, create_order: true, deposit: false, edit_order: true, fetch_balance: true, fetch_closed_orders: "emulated", fetch_currencies: true, fetch_deposit_address: true, fetch_funding_fees: false, fetch_l2_order_book: true, fetch_markets: true, fetch_my_trades: true, fetch_ohlcv: true, fetch_open_orders: true, fetch_order: "emulated", fetch_order_book: true, fetch_order_books: false, fetch_orders: "emulated", fetch_ticker: true, fetch_tickers: true, fetch_trades: true, fetch_trading_fees: true, private_api: true, public_api: true, withdraw: true }, id: "poloniex", timeout: 10000 } ] <h3>Fetch ticker <p dir="auto">Usage: <pre><code>exchange = "bitstamp" symbol = "ETH/USD" ticker = Ccxtex.fetch_ticker(Ccxtex.Port, exchange, symbol) <p dir="auto">Return value example: <pre><code>%{ ask: 577.35, ask_volume: nil, average: nil, base_volume: 73309.52075575, bid: 576.8, bid_volume: nil, change: nil, close: 577.35, datetime: "2018-05-24T14:06:09.000Z", high: 619.95, info: %{ ask: "577.35", bid: "576.80", high: "619.95", last: "577.35", low: "549.28", open: "578.40", timestamp: "1527170769", volume: "73309.52075575", vwap: "582.86" }, last: 577.35, low: 549.28, open: 578.4, percentage: nil, previous_close: nil, quote_volume: 42729187.26769644, symbol: "ETH/USD", timestamp: 1527170769000, vwap: 582.86 } <h3>Fetch OHLCV <p dir="auto">Usage: <pre><code>exchange = "bitstamp" symbol = "ETH/USD" ticker = Ccxtex.fetch_ticker(Ccxtex.Port, exchange, symbol) <p dir="auto">Return value example: <pre><code>%{ base: "ETH", base_volume: 4234.62695691, close: 731.16, exchange: "bitfinex2", high: 737.07, low: 726, open: 736.77, quote: "USDT", timestamp: ~N[2018-01-01 00:00:00.000] } <p dir="auto"><center> (*｀□)<炎炎炎炎