[amibroker] python, COM and AB

["pwa72x" <peter.aberline@xxxxxxxxx>]

Hi,

I'm using Python and the PyWin32 extensions to allow COM iterop with AB.

I'm trying to call the Item method on a Stocks object, but I'm getting the error below.
Confusingly, doing the same thing on the Markets object works fine. Can anyone suggest what is happening here?

Thanks
Peter

################################################
import win32com.client

def doWork():
	ab = win32com.client.Dispatch("Broker.Application")

	bLoadLSE = ab.LoadDatabase("E:\data\AmiBroker\Amibroker_databases\LSE");
	if bLoadLSE == False:
		print "Could not load the LSE database"
		return

	nNumMarkets = ab.Markets.Count
	print "\nNumMarkets is %d " % nNumMarkets
	for nMarketIdx in range(nNumMarkets):
		currMarket = ab.Markets.Item(nMarketIdx)
		print currMarket.Name
		
	nNumStocks = ab.Stocks.Count;
	print "\nNumStocks is %d " % nNumStocks
	for nStockIdx in range(nNumStocks):
		print "StockIdx is %d" % nStockIdx
		currStock = ab.Stocks.Item(nStockIdx) # <---- fails here
		print currStock.Ticker

if __name__ == "__main__":
	doWork()

################################################

Output:
E:\data\python>python posting.py

NumStocks is 714
StockIdx is 0
Traceback (most recent call last):
  File "posting.py", line 25, in <module>
    doWork()
  File "posting.py", line 21, in doWork
    currStock = ab.Stocks.Item(nStockIdx) # <---- fails here
TypeError: 'NoneType' object is not callable




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