[python-win32] Excel calls failing

[Carlos Izquierdo]

	Hi,

	I'm fairly new to Python COM development and I'm having trouble automating 
Microsoft Excel. I have the following piece of code:

	d = win32com.client.Dispatch('Excel.Application')
	d.Visible = 1
	dw = d.Workbooks.Open('c:\\datos.xls')
	dw.Sheets(1).Select()

	Normally it runs great, and after these four lines I can begin crunching lots 
of numbers. There are many times, however, that the code fails in the last 
line or other lines throughout the code such as:

	dw.Activate()

	The error is almost always on the lines of: "bool object is not callable". 
The randomness of this kind of failure, coupled with the fact that if I add a 
call to time.sleep() before the line that triggers the error prevents it from 
happening (prevents better the bigger the sleep, but I can't just wait half a 
minute for each row of data that I want to read, there are too many of 
them...) led me to think that it was some sort of race condition, but my 
program is single-threaded at the moment :-(

	Is there something that I'm missing?

	Thank you.

	BTW, I'm using Python 2.5 with PyWin 210 and MS Office XP/2003, if that 
helps.