Datafeed logging starts late

[Gleetche]

Hello there,

I don't know when did this start happening. The script logs the data feed like 50+ bars late. I have tested from 2 other data feed, the problem persists.

Here's the data settings (As you can see the data should start from at 1st of January 2000:

data = bt.feeds.YahooFinanceCSVData(
    dataname="data/oracle.csv",
    dtformat=2,
    fromdate=datetime.datetime(2000,1,10),
    todate=datetime.datetime(2001,12,29),
    reverse=False,
    adjclose=False)

Here's the log (You can see that it starts from 22 April 2000):

When I check the chart, it starts from 3rd of January (Close: 29.5) which is the datetime it should start logging from, because there was no 1-2 January 2020 data in the datafeed:

Here's the def next(self) #Location of the logging function

class TestStrategy(bt.Strategy):
    tradeperiod = 0
    tradecount = 0

    params = dict(
        pfast=10,
        pslow=20,
    )

    def __init__(self):
        # Keep a reference to the "close" line in the data[0] dataseries
        self.dataclose = self.datas[0].close

        self.dc = DonchianChannels()
        # To keep track of pending orders and buy price/commission
        self.order = None
        self.buyprice = None
        self.buycomm = None
        self.mai = None

        # SMA use
        sma1 = bt.ind.SMA(period=self.p.pfast)  # fast moving average
        sma2 = bt.ind.SMA(period=self.p.pslow)  # slow moving average
        self.crossover = bt.ind.CrossOver(sma1, sma2)  # crossover signal

        # ATR use
        self.dataclose = self.datas[0].close
        self.datahigh = self.datas[0].high
        self.datalow = self.datas[0].low
        self.datapreviousclose = self.datas[0].close(-1)
        self.atr = 0
        # self.my_atr = bt.ind.ATR(period = 14,)

    # LOGGING FUNCTION
    def log(self, txt, dt=None):
        ''' Logging function for this strategy'''
        dt = dt or self.datas[0].datetime.date(0)
        print('%s, %s' % (dt.isoformat(), txt))

    def next(self):
        cash = self.broker.get_cash()

        # ATR FUNCTION
        range_total = 0
        for i in range(-13, 1):
            x = self.datahigh[i] - self.datalow[i]
            y = self.datahigh[i] - self.datapreviousclose[i]
            z = self.datalow[i] - self.datapreviousclose[i]
            if x > y:
                temp_truerange = x
            else:
                temp_truerange = y

            if temp_truerange > z:
                true_range = temp_truerange
            else:
                true_range = z

            range_total += true_range
        self.atr = range_total / 14

        # Simply log the closing price of the series from the reference
        self.log('Close: %.2f , ATRx1: %.2f ,Trailing: %.2f' % (
        self.dataclose[0], (self.atr * 1), (self.datapreviousclose - (self.atr * 1))))

        # count how many days in tradecount
        if self.position:
            self.tradeperiod += 1
        else:
            self.tradeperiod = 0

        # Check if an order is pending.. if yes, cant send a 2nd order.
        if self.order:
            return

Anyone knows what is the problem here?

[Gleetche]

I meant "22 March 2000" not April.