def from_poloniex(json):
""" Gets SO from a JSON of market data
Args:
json: List of dates where each entry is a dict of raw market data.
Returns:
Float SO between 0 and 100.
"""
close = json[-1]['close'] # Latest closing price
low = min(poloniex.get_attribute(json, 'low')) # Lowest low
high = max(poloniex.get_attribute(json, 'high')) # Highest high
return eval_algorithm(close, low, high)
def eval_from_json(json):
""" Evaluates OBV from JSON (typically Poloniex API response)
Args:
json: List of dates where each entry is a dict of raw market data.
Returns:
Float of OBV
"""
closes = poloniex.get_attribute(json, 'close')
volumes = poloniex.get_attribute(json, 'volume')
obv = 0
for date in range(1, len(json)):
curr = {'close': closes[date], 'volume': volumes[date]}
prev = {'close': closes[date - 1], 'obv': obv}
obv = OBV.eval_algorithm(curr, prev)
return obv
def from_poloniex(json):
""" Gets OBV from a JSON of market data
Args:
json: List of dates where each entry is a dict of raw market data.
Returns:
Float of OBV
"""
closes = poloniex.get_attribute(json, 'close')
volumes = poloniex.get_attribute(json, 'volume')
for date, _ in enumerate(json):
if date == 0:
obv = 0
continue
curr = {'close': closes[date], 'volume': volumes[date]}
prev = {'close': closes[date - 1], 'obv': obv}
obv = eval_algorithm(curr, prev)
return obv
def test_get_attribute(self):
res = [attribute['quoteVolume'] for attribute in HTTP_RESPONSE]
attr = 'quoteVolume'
self.assertEqual(poloniex.get_attribute(HTTP_RESPONSE, attr), res)