fetch_ohlcv candle size

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https://github.com/ccxt/ccxt/blob/master/CONTRIBUTING.md#how-to-submit-an-issue

• Ubuntu:
• Python:
• 1.18.400:
• Bitmex:
• fetch_ohlcv:

Hi why I can’t fetch OHLCV data for 15m 30m, 4h, candles? My code:

def get_close_prices(exch, pair,candle):
	ohlcv = exch.fetch_ohlcv(pair,candle)
	close_prices =[]
	[close_prices.append(x[4]) for x in ohlcv]
	return close_prices

I get the error which look like this

'binSize': self.timeframes[timeframe],
KeyError: '4h'

[Arrmlet]

import ccxt
from pprint import pprint
from datetime import datetime
import itertools

exchange = ccxt.bitmex()

dt_obj = datetime.strptime('20.03.2019 00:00:00,00',
                           '%d.%m.%Y %H:%M:%S,%f')
millisec = dt_obj.timestamp() * 1000
const = 30000000 # 500 minutes into milisecond
dat = datetime.now() 
ml = dat.timestamp() * 1000
iterator = 0
a = (ml - millisec)/const +1

ohlcv_data = []
for i in range(0, int(a)):
    data = exchange.fetch_ohlcv('BTC/USD', '5m', since =millisec + iterator)
    ohlcv_data.append(data)
    iterator += const
    print(iterator)

merged = list(itertools.chain(*ohlcv_data))

pprint(merged)

Maybe its will be useful for someone.

[Arrmlet]

@kroitor Wow, thank you very much:))