array index out of range linebuffer.py

shubhamj7888

I get an error saying

COde -

class BrokerFeed(DataBase):
params = (('dataname', None),
# ('fromdate', datetime.datetime.min),
# ('todate', datetime.datetime.max),
('name', ''),
('compression', 1),
('timeframe', TimeFrame.Minutes),
('sessionend', None),
)

datafields = [
    'datetime', 'open', 'high', 'low', 'close', 'volume', 'openinterest'
]

def __init__(self, user_data, access_data, scrip_code):
    self.ws = broker_ws(user_data, access_data)
    self.scrip_code = scrip_code
    self.price = None

    self.isOpen = True
    _thread.start_new_thread(self._timerstart, (1,))

def _timerstart(self, n):
    while True:
        if self.isOpen == False:
            self.isOpen = True
        time.sleep(n)

def start(self):
    # super(BrokerFeed, self).start()
    self.ws.on_ticks = self.on_price
    self.ws.on_connect = self.on_join
    self.ws.connect()


def on_join(self, ws, response):
    self.ws.subscribe([self.scrip_code])
    self.ws.set_mode(ws.MODE_FULL, [self.scrip_code])

def on_price(self, ws, price):
    self.price = price

    self._load()

def _load(self):
    if self.isOpen == True:
        price = self.price

        t = price[0]['timestamp']
        o = price[0]['ohlc']['open']
        h = price[0]['ohlc']['high']
        l = price[0]['ohlc']['low']
        c = price[0]['ohlc']['close']
        v = price[0]['volume']
        oi = price[0]['oi']
        print(t, o, h, l, c, v, oi)

        dt = bt.date2num(t)

        # Set the standard datafields
        # for datafield in self.getlineal
        # convert to float via datetime and store it
        # dt = tstamp.to_pydatetime()
        # dtnum = date2num(dt)
        # self.lines.datetime[0] = dtnum

        # self.lines.datetime[0] = dt
        self.lines.open[0] =  o
        self.lines.high[0] = h
        self.lines.low[0] = l
        self.lines.close[0] = c
        self.lines.volume[0] = v

        return True
    else:
        return None

def notify_data(self, data, status, *args, **kwargs):
    if status == data.LIVE:
        print("live data")
    elif status == data.DELAYED:
        print("DELAYED data")

def haslivedata(self):
    return True  # must be overriden for those that can

def islive(self):
    return True

Error : builtins.IndexError: array assignment index out of range at line self.lines.open[0] = o

Please help me !

shubhamj7888

@rajanprabu Could you please share your valuable insights on this issue ? It's related to how you integrated KiteTIcker with Backtrader . Any help would be greatly appreciiated !

Kjiessar

@shubhamj7888

FIrst suspect please check lenght of

self.lines.open

Usually the error states that the index that you are trying to address is not valid.
Lines are as far as I understood no normal python lists and needs to be treated differently.

It seems here that you are trying to add the latest value.
If you want to do that check other implementations:
https://github.com/Dave-Vallance/bt-ccxt-store/blob/master/ccxtbt/ccxtfeed.py