Problem using subclasses of a Strategy

[frankles_42]

Hey guys I'm definitely a 'novice' coder so maybe I'm messing something up with the way I'm using classes and it's not backtrader related. Would really appreciate any help. Basically I created a class for a general strategy called MyStrat then I created a subclass called MacdStrat that uses the MACD to place buys and sells. When I had the MACD code inside of MyStrat everything was working great but I decided to make a subclass so that I could make multiple subclasses with different strategies. Here's my code below with my first class and then the subclass. Thanks again.

import backtrader as bt

class MyStrat(bt.Strategy):

    def notify_fund(self, cash, value, fundvalue, shares):
        self.cash = cash 

    def notify_order(self, order):
        if order.status in [order.Submitted, order.Accepted]:
            return
        
        if order.status in [order.Completed]:
            # if order.isbuy():
            #     self.log("BOUGHT %i SHARES at $%.2f" % (order.executed.size, order.executed.price))
                

            # elif order.issell():
            #     self.log("SOLD %i SHARES at $%.2f" % (order.executed.size, order.executed.price))
                
            self.shares = self.shares + order.executed.size
        self.order = None

    def __init__(self):
        self.order = None
        self.shares = 0
        self.cash = 0
        
    def next(self):
        if self.order:
            return    
        
        #if self.cash > 0:
             #BUY CONDITION:
                 #self.log("BUY CREATED at $%.2f" % self.data.close[0])
                 #self.order = self.buy(size=int(self.cash*0.50/self.data.close[0]))
                                           
        #if self.shares > 0:
             #if SELL CONDITION: 
                 #self.log("SELL CREATED at $%.2f" % self.data.close[0])
                 #self.order = self.sell(size=int(self.shares*0.50))
            
    def log(self, txt, dt=None):
        dt = dt or self.datas[0].datetime.date(0)
        print("%s, %s" % (dt.isoformat(), txt))


class MacdStrat(MyStrat):
    
    def __init__(self):
        self.macd = bt.indicators.MACD(self.data.close)
        self.cross = bt.indicators.CrossOver(self.macd.macd, self.macd.signal)
        self.order = None
        self.shares = 0
        self.cash = 0
        print(self.cross)
   
    def next(self):
        if self.order:
            return

        if self.cash > 0:
            if self.cross[0] > 0:
                #self.log("BUY CREATED at $%.2f" % self.data.close[0])
                self.order = self.buy(size=int(self.cash*0.50/self.data.close[0]))
                                                   
        if self.shares > 0:
            if self.cross[0] < 0: 
                #self.log("SELL CREATED at $%.2f" % self.data.close[0])
                self.order = self.sell(size=int(self.shares*0.50))

[run-out]

@frankles_42 Google python class super function

That should get you on your way.

[frankles_42]

@run-out I have tried using the super() function before and that hasn't really helped. I forgot to include that my error was related to files in the indicators folder of the backtrader package, specifically a file called basicops.py and specifically a class that's called Average in that file. However now that I try implementing all of the indicators and if statements in the MyStrat class, now its not working and is giving the same error. So at this point I think I'm messing something up with backtrader and not the classes. THx

[run-out]

@frankles_42 We could probably help better if you share your error codes. Thanks