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README.rst

Welcome to cryptology-ws-client-python v1.1.5

This is an official Python client library for the Cryptology exchange WebSocket API.

By using this Cryptology Python client you confirm that you have read and accept License Agreement:

Features

  • Asynchronous implementation of all WebSocket Market Data and Account endpoints.
  • Handling response errors
  • Withdrawal functionality

Quick Start

Receive your own API access key and secret key.

pip install cryptology-ws-client

Run tests.

make tests

And see example.

import asyncio
import itertools
import os
import logging
import time

from collections import namedtuple
from cryptology import ClientWriterStub, run_client, exceptions
from datetime import datetime
from decimal import Decimal
from typing import Iterable, Dict, List

SERVER = os.getenv('SERVER', 'wss://api.sandbox.cryptology.com')


logging.basicConfig(level='DEBUG')


async def main():

    async def writer(ws: ClientWriterStub, pairs: List, state: Dict) -> None:
        while True:
            client_order_id = int(time.time() * 10)
            await ws.send_message(payload={
                '@type': 'PlaceBuyLimitOrder',
                'trade_pair': 'BTC_USD',
                'price': '1',
                'amount': '1',
                'client_order_id': client_order_id,
                'ttl': 0
            })
            await asyncio.sleep(5)

    async def read_callback(ws: ClientWriterStub, ts: datetime, message_id: int, payload: dict) -> None:
        if payload['@type'] == 'BuyOrderPlaced':
            await ws.send_message(payload={'@type': 'CancelOrder', 'order_id': payload['order_id']})

    while True:
        try:
            await run_client(
                access_key='YOUR ACCESS KEY',
                secret_key='YOUR SECRET KEY',
                ws_addr=SERVER,
                writer=writer,
                read_callback=read_callback,
                last_seen_message_id=-1
            )
        except exceptions.ServerRestart:
            asyncio.sleep(60)


if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())

For more check out the documentation.