This is the python package used in Money on Chain projects where it is required to get the coinpair values directly from the sources. This package includes a CLI tool that allows you to query the coinpair values in the same way that Money on Chain projects do.
Do some imports first
user@host:~$ python3
Python 3.8.5 (default, Jul 28 2020, 12:59:40)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from moc_prices_source import get_price, BTC_USD, RIF_BTC, ALL
>>>Get de BTC/USD coin pair
>>> get_price(BTC_USD)
Decimal('13089.82')
>>> Get de RIF/BTC coin pair
>>> get_price(RIF_BTC)
Decimal('0.00000713')
>>> Get errors detail (forced errors for example)
>>> d = {}
>>> values = get_price(detail = d)
>>> for e in d['prices']:
... if not e["ok"]:
... print('{}: {}'.format(e["name"], e["error"]))
...
btc_usd_kraken: HTTPSConnectionPool(host='api.bad_uri.com', port=443): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f2c48700b50>: Failed to establish a new connection: [Errno -2] Name or service not known'))
>>>Show the default weighing
>>> from moc_prices_source.weighing import weighing
>>> print(weighing)
Engine Weigh
------------------ ---------
btc_usd_bitstamp 0.22619
btc_usd_bitfinex 0.153778
btc_usd_kraken 0.152346
btc_usd_coinbase 0.403366
btc_usd_gemini 0.0643202
rif_btc_bithumbpro 0.333333
rif_btc_kucoin 0.333333
rif_btc_coinbene 0.333333
>>> weighing.as_dict
{'btc_usd_bitstamp': Decimal('0.226189632'), 'btc_usd_bitfinex': Decimal('0.1537782868'), 'btc_usd_kraken': Decimal('0.1523461274'), 'btc_usd_coinbase': Decimal('0.4033657328'), 'btc_usd_gemini': Decimal('0.06432022093'), 'rif_btc_bithumbpro': Decimal('0.333333333'), 'rif_btc_kucoin': Decimal('0.333333333'), 'rif_btc_coinbene': Decimal('0.333333333')}
>>> Override the default weighing
>>> w = {"btc_usd_bitstamp": 0.2, "btc_usd_bitfinex": 0.8}
>>> get_price(weighing = w)
Decimal('13070')
>>> Show all details of the coin pair obtained
>>> import json
>>> d = {}
>>> values = get_price(ALL, detail = d, serializable = True)
>>>
>>> values
{<BTC/USD Coin Pair object>: Decimal('15250.00000'), <RIF/BTC Coin Pair object>: Decimal('0.00000637'), <RIF/USD Coin Pair object>: Decimal('0.0971425000000')}
>>>
>>> print(json.dumps(d, indent=4, sort_keys=True))
{
"prices": [
{
"coinpair": "BTC/USD",
"description": "Bitstamp",
"error": null,
"name": "btc_usd_bitstamp",
"ok": true,
"percentual_weighing": 0.22618963201583328,
"price": 15248.38,
"time": 0.279066,
"timeout": 10,
"timestamp": "2020-11-08 14:23:02",
"uri": "https://www.bitstamp.net/api/v2/ticker/btcusd/",
"volume": 10835.66006591,
"weighing": 0.226189632
},
{
"coinpair": "RIF/BTC",
"description": "Coinbene",
"error": null,
"name": "rif_btc_coinbene",
"ok": true,
"percentual_weighing": 0.3333333333333333,
"price": 5.8e-06,
"time": 1.571258,
"timeout": 10,
"timestamp": "2020-11-08 11:23:04",
"uri": "http://api.coinbene.com/v1/market/ticker?symbol=RIFBTC",
"volume": 806810.93,
"weighing": 0.333333333
},
{
"coinpair": "BTC/USD",
"description": "Bitfinex",
"error": null,
"name": "btc_usd_bitfinex",
"ok": true,
"percentual_weighing": 0.15377828681076447,
"price": 15248.22269385,
"time": 0.267649,
"timeout": 10,
"timestamp": "2020-11-08 11:23:02",
"uri": "https://api-pub.bitfinex.com/v2/ticker/tBTCUSD",
"volume": 14362.55862314,
"weighing": 0.1537782868
},
{
"coinpair": "BTC/USD",
"description": "Gemini",
"error": null,
"name": "btc_usd_gemini",
"ok": true,
"percentual_weighing": 0.06432022093450242,
"price": 15254.3,
"time": 0.952623,
"timeout": 10,
"timestamp": "2020-11-08 11:23:03",
"uri": "https://api.gemini.com/v1/pubticker/BTCUSD",
"volume": 0.0,
"weighing": 0.06432022093
},
{
"coinpair": "BTC/USD",
"description": "Coinbase",
"error": null,
"name": "btc_usd_coinbase",
"ok": true,
"percentual_weighing": 0.4033657328282356,
"price": 15251.88,
"time": 0.246729,
"timeout": 10,
"timestamp": "2020-11-08 11:23:02",
"uri": "https://api.coinbase.com/v2/prices/spot?currency=USD",
"volume": 0.0,
"weighing": 0.4033657328
},
{
"coinpair": "BTC/USD",
"description": "Kraken",
"error": null,
"name": "btc_usd_kraken",
"ok": true,
"percentual_weighing": 0.15234612741066422,
"price": 15250.0,
"time": 0.265883,
"timeout": 10,
"timestamp": "2020-11-08 11:23:02",
"uri": "https://api.kraken.com/0/public/Ticker?pair=XXBTZUSD",
"volume": 8018.38037875,
"weighing": 0.1523461274
},
{
"coinpair": "RIF/BTC",
"description": "Kucoin",
"error": null,
"name": "rif_btc_kucoin",
"ok": true,
"percentual_weighing": 0.3333333333333333,
"price": 6.37e-06,
"time": 0.932421,
"timeout": 10,
"timestamp": "2020-11-08 11:23:03",
"uri": "https://openapi-v2.kucoin.com/api/v1/market/orderbook/level1?symbol=RIF-BTC",
"volume": 963.5025,
"weighing": 0.333333333
},
{
"coinpair": "RIF/BTC",
"description": "BitHumb",
"error": null,
"name": "rif_btc_bithumbpro",
"ok": true,
"percentual_weighing": 0.3333333333333333,
"price": 6.67e-06,
"time": 1.836675,
"timeout": 10,
"timestamp": "2020-11-08 11:23:04",
"uri": "https://global-openapi.bithumb.pro/openapi/v1/spot/ticker?symbol=RIF-BTC",
"volume": 27932.67,
"weighing": 0.333333333
}
],
"time": 1.882155,
"values": {
"BTC/USD": {
"mean_price": 15250.55653877,
"median_price": 15250.0,
"prices": [
15248.38,
15248.22269385,
15254.3,
15251.88,
15250.0
],
"weighings": [
0.22618963201583328,
0.15377828681076447,
0.06432022093450242,
0.4033657328282356,
0.15234612741066422
],
"weighted_median_price": 15250.0
},
"RIF/BTC": {
"mean_price": 6.28e-06,
"median_price": 6.37e-06,
"prices": [
5.8e-06,
6.37e-06,
6.67e-06
],
"weighings": [
0.3333333333333333,
0.3333333333333333,
0.3333333333333333
],
"weighted_median_price": 6.37e-06
},
"RIF/USD": {
"mean_price": 0.0957734950634756,
"median_price": 0.0971425,
"requirements": [
"RIF/BTC",
"BTC/USD"
],
"weighted_median_price": 0.0971425
}
}
}
>>> Coin object and Coin Pair object usage:
>>> BTC_USD
<BTC/USD Coin Pair object>
>>> str(BTC_USD)
'BTC/USD'
>>> BTC_USD.from_
<Bitcoin Coin object>
>>> str(BTC_USD.from_)
'BTC'
>>> BTC_USD.to_
<Dollar Coin object>
>>> str(BTC_USD.to_)
'USD'
>>> BTC_USD.from_.symbol
'BTC'
>>> BTC_USD.from_.name
'Bitcoin'
>>> BTC_USD.from_.small_symbol
'₿'
>>>