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Hi,
Thank you, both techniques work perfectly. Also, none of the stocks come back as null when using these techniques. Strange...
Peter.
--- In amibroker@xxxxxxxxxxxxxxx, Steve Wong <swstevewong38@xxx> wrote:
>
> Hello,
>
> You may already seen that either below two ways the code will work:
>
> 1. currStock = ab.Stocks.__getitem__( nStockIdx) (# instead of using Item)
> 2. loop without using the index variable
>
> for stock in ab.Stocks:
> print stock.Ticker
>
> The new question brought why the Item method has the power to render ab.Stocks sometimes null, or seems so: (<== as revealed by the snake lanaguage's complaint about Nonetype object is not callable) ?
>
> Regards,
> SW
>
>
>
>
> ________________________________
> From: pwa72x <peter.aberline@xxx>
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Friday, May 29, 2009 3:55:16 AM
> Subject: [amibroker] Re: python, COM and AB
>
>
>
>
>
>
> > You've done a search of the forum archives for Python, right?
>
> Yes, unfortunately there doesn't seem to be anything about this. I've got a couple of other ideas to try:
>
> * Early binding of Python.
> * Passing a variant from Python to other non-Amibroker COM object.
> * Passing a variant to one of the variable parameter methods in Amibroker.
>
> Thanks,
> Peter.
>
> --- In amibroker@xxxxxxxxx ps.com, dingo <waledingo@ ..> wrote:
> >
> > You've done a search of the forum archives for Python, right?
> >
> > d
> >
> > On Wed, May 27, 2009 at 2:26 AM, pwa72x <peter.aberline@ ...> wrote:
> >
> > > Hi,
> > >
> > > I can see now that the parameter types are different. The Markets item
> > > method takes an integer and the Stocks method takes a variant.
> > >
> > > According to the win32com docs,
> > > http://oreilly. com/catalog/ pythonwin32/ chapter/ch12. html#24074, PythonWin
> > > will map python types to a variant automagically, so it should just work.
> > > Perhaps this is an issue with late binding, and that I should force it to
> > > use early binding?
> > >
> > > Any ideas anyone?
> > >
> > > Thanks
> > > Peter.
> > >
> > > --- In amibroker@xxxxxxxxx ps.com, "pwa72x" <peter.aberline@ > wrote:
> > > >
> > > > 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.Applicat ion")
> > > >
> > > > 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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> > > This is *NOT* technical support channel.
> > >
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> >
>
------------------------------------
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