backtesting error from getvaluesize:

azuric

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-414-3bfb3089a414> in <module>
     11 #cerebro.addanalyzer(bt.analyzers.TradeAnalyzer, _name='myTradesStats')
     12 #cerebro.broker.setcommission(commission=0.001)
---> 13 results = cerebro.run()

/data/NFS/akhil/python-env/lib64/python3.6/site-packages/backtrader/cerebro.py in run(self, **kwargs)
   1125             # let's skip process "spawning"
   1126             for iterstrat in iterstrats:
-> 1127                 runstrat = self.runstrategies(iterstrat)
   1128                 self.runstrats.append(runstrat)
   1129                 if self._dooptimize:

/data/NFS/akhil/python-env/lib64/python3.6/site-packages/backtrader/cerebro.py in runstrategies(self, iterstrat, predata)
   1291                     self._runonce_old(runstrats)
   1292                 else:
-> 1293                     self._runonce(runstrats)
   1294             else:
   1295                 if self.p.oldsync:

/data/NFS/akhil/python-env/lib64/python3.6/site-packages/backtrader/cerebro.py in _runonce(self, runstrats)
   1686                         return
   1687 
-> 1688             self._brokernotify()
   1689             if self._event_stop:  # stop if requested
   1690                 return

/data/NFS/akhil/python-env/lib64/python3.6/site-packages/backtrader/cerebro.py in _brokernotify(self)
   1358         notification to the strategy
   1359         '''
-> 1360         self._broker.next()
   1361         while True:
   1362             order = self._broker.get_notification()

/data/NFS/akhil/python-env/lib64/python3.6/site-packages/backtrader/brokers/bbroker.py in next(self)
   1219 
   1220             else:
-> 1221                 self._try_exec(order)
   1222                 if order.alive():
   1223                     self.pending.append(order)

/data/NFS/akhil/python-env/lib64/python3.6/site-packages/backtrader/brokers/bbroker.py in _try_exec(self, order)
   1065 
   1066         if order.exectype == Order.Market:
-> 1067             self._try_exec_market(order, popen, phigh, plow)
   1068 
   1069         elif order.exectype == Order.Close:

/data/NFS/akhil/python-env/lib64/python3.6/site-packages/backtrader/brokers/bbroker.py in _try_exec_market(self, order, popen, phigh, plow)
    875             p = self._slip_down(plow, exprice, doslip=self.p.slip_open)
    876 
--> 877         self._execute(order, ago=0, price=p, dtcoc=dtcoc)
    878 
    879     def _try_exec_close(self, order, pclose):

/data/NFS/akhil/python-env/lib64/python3.6/site-packages/backtrader/brokers/bbroker.py in _execute(self, order, ago, price, cash, position, dtcoc)
    749             # Adjust to returned value for closed items & acquired opened items
    750             if self.p.shortcash:
--> 751                 closedvalue = comminfo.getvaluesize(-closed, pprice_orig)
    752             else:
    753                 closedvalue = comminfo.getoperationcost(closed, pprice_orig)

/data/NFS/akhil/python-env/lib64/python3.6/site-packages/backtrader/comminfo.py in getvaluesize(self, size, price)
    210             return abs(size) * self.get_margin(price)
    211 
--> 212         return size * price
    213 
    214     def getvalue(self, position, price):

ValueError: cannot copy sequence with size 1047 to array axis with dimension 8954
![alt text](image url)

Can anyone help with this?

Mexflubber

I'm facing the same issue, did you discover a fix or the root cause ?