copra 1.2.9

Asyncronous Python REST and WebSocket Clients for the Coinbase Pro virtual currency trading platform.

CoPrA

Asyncronous Python REST and WebSocket Clients for Coinbase Pro

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Quick Links: Documentation - Source Code - PyPi

Related: Coinbase Pro Digital Currency Exchange - Coinbase Pro REST API - Coinbase Pro WebSocket API

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Introduction

The CoPrA (Coinbase Pro Async) package provides asyncronous REST and WebSocket clients written in Python for use with the Coinbase Pro digital currency trading platform. To learn about Coinbase Pro’s REST and WebSocket APIs as well as how to obtain an API key for authentication to those services, please see Coinbase Pro’s API documentation.

CoPrA Features

• compatible with Python 3.5 or greater

• utilizes Python’s asyncio concurrency framework

• open source (MIT license)

REST Features

• Asyncronous REST client class with 100% of the account management, trading, and market data functionality offered by the Coinbase Pro REST API.

• supports user authentication

• built on aiohttp, the asynchronous HTTP client/server framework for asyncio and Python

WebSocket Features

• Asyncronous WebSocket client class with callback hooks for managing every phase of a Coinbase Pro WebSocket session

• supports user authentication

• built on Autobahn|Python, the open-source (MIT) real-time framework for web, mobile & the Internet of Things.

Examples

REST

Without a Coinbase Pro API key, copra.rest.Client has access to all of the public market data that Coinbase makes available.

# 24hour_stats.py

import asyncio

from copra.rest import Client

loop = asyncio.get_event_loop()

client = Client(loop)

async def get_stats():
    btc_stats = await client.get_24hour_stats('BTC-USD')
    print(btc_stats)

loop.run_until_complete(get_stats())
loop.run_until_complete(client.close())

Running the above:

$ python3 24hour_stats.py
{'open': '3914.96000000', 'high': '3957.10000000', 'low': '3508.00000000', 'volume': '37134.10720409', 'last': '3670.06000000', 'volume_30day': '423047.53794129'}

In conjunction with a Coinbase Pro API key, copra.rest.Client can be used to trade cryptocurrency and manage your Coinbase pro account. This example also shows how copra.rest.Client can be used as a context manager.

# btc_account_info.py

import asyncio

from copra.rest import Client

KEY = YOUR_API_KEY
SECRET = YOUR_API_SECRET
PASSPHRASE = YOUR_API_PASSPHRASE

BTC_ACCOUNT_ID = YOUR_BTC_ACCOUNT_ID

loop = asyncio.get_event_loop()

async def get_btc_account():
    async with Client(loop, auth=True, key=KEY,
                      secret=SECRET, passphrase=PASSPHRASE) as client:

        btc_account = await client.account(BTC_ACCOUNT_ID)
        print(btc_account)

loop.run_until_complete(get_btc_account())

Running the above:

$ python3 btc_account_info.py
{'id': '1b121cbe-bd4-4c42-9e31-7047632fc7c7', 'currency': 'BTC', 'balance': '26.1023109600000000', 'available': '26.09731096', 'hold': '0.0050000000000000', 'profile_id': '151d9abd-abcc-4597-ae40-b6286d72a0bd'}

WebSocket

While copra.websocket.Client is meant to be overridden, but it can be used ‘as is’ to test the module through the command line.

# btc_heartbeat.py

import asyncio

from copra.websocket import Channel, Client

loop = asyncio.get_event_loop()

ws = Client(loop, Channel('heartbeat', 'BTC-USD'))

try:
    loop.run_forever()
except KeyboardInterrupt:
    loop.run_until_complete(ws.close())
    loop.close()

Running the above:

$ python3 btc_heartbeat.py
{'type': 'subscriptions', 'channels': [{'name': 'heartbeat', 'product_ids': ['BTC-USD']}]}
{'type': 'heartbeat', 'last_trade_id': 45950713, 'product_id': 'BTC-USD', 'sequence': 6254273323, 'time': '2018-07-05T22:36:30.823000Z'}
{'type': 'heartbeat', 'last_trade_id': 45950714, 'product_id': 'BTC-USD', 'sequence': 6254273420, 'time': '2018-07-05T22:36:31.823000Z'}
{'type': 'heartbeat', 'last_trade_id': 45950715, 'product_id': 'BTC-USD', 'sequence': 6254273528, 'time': '2018-07-05T22:36:32.823000Z'}
{'type': 'heartbeat', 'last_trade_id': 45950715, 'product_id': 'BTC-USD', 'sequence': 6254273641, 'time': '2018-07-05T22:36:33.823000Z'}
{'type': 'heartbeat', 'last_trade_id': 45950715, 'product_id': 'BTC-USD', 'sequence': 6254273758, 'time': '2018-07-05T22:36:34.823000Z'}
{'type': 'heartbeat', 'last_trade_id': 45950720, 'product_id': 'BTC-USD', 'sequence': 6254273910, 'time': '2018-07-05T22:36:35.824000Z'}
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A Coinbase Pro API key allows copra.websocket.Client to authenticate with the Coinbase WebSocket server giving you access to feeds specific to your user account.

# user_channel.py

import asyncio

from copra.websocket import Channel, Client

KEY = YOUR_API_KEY
SECRET = YOUR_API_SECRET
PASSPHRASE = YOUR_API_PASSPHRASE

loop = asyncio.get_event_loop()

channel = Channel('user', 'LTC-USD')

ws = Client(loop, channel, auth=True, key=KEY, secret=SECRET, passphrase=PASSPHRASE)

try:
    loop.run_forever()
except KeyboardInterrupt:
    loop.run_until_complete(ws.close())
    loop.close()

Running the above:

$ python3 user_channel.py
{'type': 'subscriptions', 'channels': [{'name': 'user', 'product_ids': ['LTC-USD']}]}
{'type': 'received', 'order_id': '42d2677d-0d37-435f-a776-e9e7f81ff22b', 'order_type': 'limit', 'size': '50.00000000', 'price': '1.00000000', 'side': 'buy', 'client_oid': '00098b59-4ac9-4ff8-ba16-bd2ef673f7b7', 'product_id': 'LTC-USD', 'sequence': 2311323871, 'user_id': '642394321fdf8242c4006432', 'profile_id': '039ee148-d490-44f9-9aed-0d1f6412884', 'time': '2018-07-07T17:33:29.755000Z'}
{'type': 'open', 'side': 'buy', 'price': '1.00000000', 'order_id': '42d2677d-0d37-435f-a776-e9e7f81ff22b', 'remaining_size': '50.00000000', 'product_id': 'LTC-USD', 'sequence': 2311323872, 'user_id': '642394321fdf8242c4006432', 'profile_id': '039ee148-d490-44f9-9aed-0d1f6412884', 'time': '2018-07-07T17:33:29.755000Z'}
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Versioning

We use SemVer for versioning. For the versions available, see the tags on this repository.

License

This project is licensed under the MIT License - see the LICENSE file for details

Authors

Tony Podlaski - http://www.neuraldump.net

See also the list of contributers who participated in this project.

Contributing

Please read CONTRIBUTING.rst for details on our code of conduct, and the process for submitting pull requests to us.

Credits

This package was created with Cookiecutter and the audreyr/cookiecutter-pypackage project template.

History

0.1.0 (2018-07-06)

• First release on PyPI.

0.2.0 (2018-07-07)

• Added Client authentication.

0.3.0 (2018-07-09)

• Added reconnect option to Client.

0.4.0 (2018-07-10)

• Added subscribe and unsubscribe methods to Client.

1.0.0 (2018-07-12)

• Added full documentation of the CoPrA API.

1.0.1 (2018-07-12)

• Fixed typos in the documentation.

1.0.2 (2018-07-12)

• Added Examples page to the documentation.

1.0.3 (2018-07-16)

• More documentation typos fixed.

1.0.4 - 1.0.5 (2018-07-17)

• Non-API changes.

1.0.6 (2018-08-19)

• Updated Autobahn requirement to 18.8.1

1.0.7 (2018-08-19)

• Modified Travis config to test against Python 3.7.

1.1.0 (2018-11-27)

• Added REST client.

1.1.2 (2018-12-01)

• Updated documentation formatting.

1.2.0 (2019-01-04)

• Created copra.rest package and moved old copra.rest module to copra.rest.client.

• Created copra.websocket package and moved old copra.websocket module to copra.websocket.client.

• Add imports to copra.rest.__init__ and copra.websocket.__init__ so that classes and attributes can still be imported as they were before.

• Rewrote and completed unit tests from copra.websocket.

1.2.5 (2019-01-05)

• Updated copra.websocket.client unit tests to ignore those that are incompatible with Python 3.5 due to Mock methods that were not yet implemented.

1.2.6 (2019-01-07)

• Updated the REST client to attach an additional query string parameter to all GET requests. The parameter, ‘no-cache’, is a timestamp and ensures that the Coinbase server responds to all GET requests with fresh and not cached content.