# B0、取得最近几天股票价格信息
grid = get_price(stock, start_date=g.start, end_date=g.today, \
fields=['open', 'high', 'low', 'close', 'low_limit', 'paused'])
# B1、今日低开(即:今开<昨低)、今日未跌停则买入
if len(grid) > 1 and grid.low[-2] > grid.open[-1] and grid.open[-1] > grid.low_limit[-1]:
order(stock, int(assign/grid.open[-1]))