@ensure_tag(['tr'])
def get_td_at_index(tr, index):
    current = 0
    for td in tr.xpath('.//w:tc', namespaces=tr.nsmap):
        if index == current:
            return td
        current += get_grid_span(td)
Returns the 1-based index of the first object on the given page,
dataset/ETHPy150Open PolicyStat/docx2html/docx2html/core.py/get_td_at_index--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-0.96/django/core/paginator.py/ObjectPaginator.first_on_page