comple list slices

[shandy.b at gmail.com]

A couple questions:

1- what is j?
2- what does the rows[x][y] object look like?  I assume it's a dict
that has a "rowspan" key.  Can rows[x][y]["rowspan"] sometimes be 0?

Perhaps you're looking for something like this:
rowgroups = []
rowspan = 0
for i in range( len(rows) ):
    if rowspan <= 0:
        rowspan = rows[j][0]["rowspan"]
        if rowspan == 0:
            rowspan = 1

        rowgroups.append(rows[ i : i + rowspan ])

    rowspan -= 1

-sjbrown