from gluon.contrib.spreadsheet import Sheet

def callback():
    return cache.ram('sheet1', lambda: None, None).process(request)


def index():
    sheet = cache.ram('sheet1', lambda: Sheet(10, 10, URL('callback')), 0)
    #sheet.cell('r0c3',value='=r0c0+r0c1+r0c2',readonly=True)
    return dict(sheet=sheet)