Calculate number of tiles to produce

[Alessandro Candini]

Hi list.
I succesfully use generate_tiles.py script and I wonder if it's
possible to calculate at the very beginning of its execution the total
number of tiles that the scrpt is going to produce.

For example on a shapefile of Salzburg, I have customized the script
with the following parameters:
minZoom = 12
maxZoom = 18
bbox = (12.96524048, 47.77163739, 13.06549072, 47.81684332)
and I saw that it produces 5000 tiles.

How can I use these parameters to calculate the number 5000?

Thanks in advance

[Andrew Harvey]

Hmm I calculate 4925 via https://gist.github.com/1675606