How to check whether the order is a buy or a sell order?

[LakersJames]

import pandas as pd
import yfinance as yf
from ta.utils import dropna
import backtrader as bt
import backtrader.feeds as btfeeds
import talib
import math
import matplotlib
from datetime import datetime
from nsepy import get_history
import datetime
from ta.trend import ADXIndicator
import ta
import time

class TestStrategy(bt.Strategy):

    def log(self, txt, dt=None):
        dt = dt or self.datas[0].datetime.date(0)
        print(f'{dt.isoformat()} {txt}')  # Print date and close

    def __init__(self):
        self.close = self.datas[0].close
        self.order = None
        self.ema = bt.ind.EMA(period=6)
        self.rsi = bt.indicators.RelativeStrengthIndex(period=7)

        self.diplus = bt.indicators.PlusDirectionalIndicator()
        self.diminus = bt.indicators.MinusDirectionalIndicator()
        dx = abs(self.diplus - self.diminus) / (self.diplus + self.diminus) * 100
        self.adx = bt.indicators.MovingAverageSimple(dx, period=7)

    # self.high_rsi=bt.ind.Highest(self.rsi,period=0)

    def price_check(self):
        value = cerebro.broker.getvalue()
        return (value // self.close[-1]) - 55

    def next(self):
        if self.order:
            return

        if not self.position:#when we have not taken any positions
            if self.rsi > self.rsi[-2] and self.rsi[-1] > 60 and self.rsi[0] >= 62 and self.diplus > 28 and self.adx[-1] > 28 and self.adx[0] > 29 and self.ema[-1] < self.close[-1] and self.ema[0] < self.close[0]:

                self.order = self.buy(size=self.price_check())#i have made a method to go for maximum size
                self.log(f'BUY CREATE {self.close[0]:2f}')
        if (self.position.size>0):  # when we are long
            self.order = self.sell(size=self.position.size, exectype=bt.Order.StopTrail, trailpercent=0.065)

cerebro = bt.Cerebro()
cerebro.broker.setcash(100000.0)
dfy=yf.download("TATAMOTORS.NS",period="1y",interval="1h")
dfy1=pd.DataFrame(dfy)
feed = bt.feeds.PandasData(dataname=dfy)
cerebro.adddata(feed)
cerebro.addstrategy(TestStrategy)
cerebro.run()
cerebro.plot()

The problem that am facing is my self.position.size if showing 0 always. What can I do to check whether the order is a buy or sell

[vladisld]

Please take look at the docs here.

Once you have an order instance you can check if it a buy or sell by using the following methods:

User Methods:

    isbuy(): returns bool indicating if the order buys

    issell(): returns bool indicating if the order sells

[LakersJames]

yes but how can I use this{ self.order.isbuy()} is in next() method because we ain't passing order as an argument ?