def test_limit(self):
"""
When a limit is provided, historical data should only have that many
elements (at most)
"""
cc = CryptoCompare()
result = cc.get_historical('BTC', 'USD', limit=25)
# for some reason CryptoCompare returns limit + 1 points
self.assertEqual(len(result), 25 + 1)
def test_to_ts(self):
"""
When timestamp limit is provided, historical data should only be before
that limit
"""
cc = CryptoCompare()
ts = int(time.time()) - 1000
result = cc.get_historical('BTC',
'USD',
period=Period.MINUTE,
to_ts=ts)
for e in result:
self.assertLessEqual(e['time'], ts)
def test_specific_exchange(self):
"""Requesting historical data from a specific exchange should work"""
cc = CryptoCompare()
result = cc.get_historical('BTC', 'USD', exchange='Kraken')
self.assertIsInstance(result[0]['close'], numbers.Real)
def test_specific_period(self):
"""Historical data should follow specified period"""
cc = CryptoCompare()
result = cc.get_historical('BTC', 'USD', period=Period.MINUTE)
for a, b in zip(result[:-1], result[1:]):
self.assertEqual(b['time'] - a['time'], 60)
def test_btc_usd(self):
"""Get historical data for BTC/USD should work"""
cc = CryptoCompare()
result = cc.get_historical('BTC', 'USD')
self.assertIsInstance(result[0]['close'], numbers.Real)
from cryptocompare import CryptoCompare, CryptoCompareApiError, Period
BASE = 'ETH'
QUOTE = 'USD'
cc = CryptoCompare()
# prices need to be read in a loop because of cryptocompare's historical prices
# points limit
points = []
ts = None
while True:
try:
data = cc.get_historical(BASE,
QUOTE,
period=Period.MINUTE,
limit=100000,
to_ts=ts)
except CryptoCompareApiError:
break
# first price is the oldest one, remove one to not include that point again
ts = data[0]['time']
print("Got historical data from {} ({} points)".format(ts, len(data)))
data.extend(points)
points = data
closes = [p['close'] for p in points]
datetimes = [datetime.datetime.fromtimestamp(p['time']) for p in points]
