gistfile1.py

def cell_data_time(column, cell, model, row, data):
    """Display value as time, eg 1m10s"""
    time = model.get_value(row, data)
    if func_last_value.get(column.title, None) == time:
        return
    func_last_value[column.title] = time

    if time <= 0:
        time_str = ""
    else:
        time_str = common.ftime(time)
    cell.set_property('text', time_str)