Attribute Error: object has no attribute 'postion'

Carson Lansdowne

Hello all,

I am working on a project and frustratingly something about my self.position code does not seem to be working. It works in other strategies I have written so I am not sure what the issue is

The error thrown is AttributeError: 'Lines_LineSeries_LineIterator_DataAccessor_Strateg' object has no attribute 'postion'

import backtrader as bt
from datetime import datetime, timedelta, date
import math


class exampleSizer(bt.Sizer):
    params = (('size',1),)
    def _getsizing(self, comminfo, cash, data, isbuy):
        return self.p.size

class buynhold_1(bt.Strategy):
    #params = (('year',1))
    
    def __init__(self):
        self.dataclose = self.datas[0].close()
        #self.currdate = self.datas[0].datetime.date(0)
        self.order = None
    
    def start(self):
        self.val_start = self.broker.get_cash()  # keep the starting cash

    def nextstart(self):
        # Buy all the available cash
        self.buy()
        self.bar_executed = 0
        
    def next(self):
        self.currdate = self.datas[0].datetime.date(len(self))
        self.duration = len(self) - self.bar_executed + 1
        
        if not self.postion:
            if self.currdate == datetime.date(2016, 1, 3):
                self.buy()
                self.bar_executed = len(self)
        
        elif self.duration == 100:
            self.close()
            
        #else:
         #   self.duration = len(self) - self.bar_executed + 1

    def stop(self):
        # calculate the actual returns
        self.roi = (self.broker.get_value() / self.val_start) - 1.0
        print('ROI:        {:.2f}%'.format(100.0 * self.roi))

Any advice is sincerely appreciated, I literally started python today.

Soham Jain

@Carson-Lansdowne said in Attribute Error: object has no attribute 'postion':

postion

Hey Carson.
A little modification in the 31st line of your code is required.
Under the class method next within the class buynhold_1, make the following changes:

Old code:

if not self.postion:
            if self.currdate == datetime.date(2016, 1, 3):
                self.buy()
                self.bar_executed = len(self)

New Code:

if not self.position:
            if self.currdate == datetime.date(2016, 1, 3):
                self.buy()
                self.bar_executed = len(self)

It's a mere spelling error self.position and not self.postion. Hope it works now:)

Carson Lansdowne

Oh my gosh I must be blind. Thank you for taking the time to answer such a dumb question