find column respecting row/colspans

span.py

# 0-based /row/ to search for /text/
def find_column(table, row, text):
    trs = table.find_all('tr')
    results = [[c for c in trs[i].findChildren(recursive=False)]
               for i in range(0, row+1)]
    for r in range(row-1, -1, -1):
        i = 0
        for c in results[r]:
            if r+int(c.get('rowspan', 0)) > row:
                results[-1].insert(i, None)
            i += int(c.get('colspan', 1))
    i = 0
    for c in results[-1]:
        if c and c.text.strip() == text:
            return i
        i += int(c.get('colspan', 1) if c else 1)