【check_bi函数】查找极值时根据min_bi_len过滤

[urna]

check_bi函数查找极值时
`min_bi_len = envs.get_min_bi_len()
fxs = check_fxs(bars)
if len(fxs) < 2:
return None, bars

fx_a = fxs[0]
try:
    if fxs[0].mark == Mark.D:
        direction = Direction.Up
        fxs_b = [x for x in fxs if x.mark == Mark.G and x.dt > fx_a.dt and x.fx > fx_a.fx]
        if not fxs_b:
            return None, bars

        fx_b = fxs_b[0]
        for fx in fxs_b:
            if fx.high >= fx_b.high:
                fx_b = fx

    elif fxs[0].mark == Mark.G:
        direction = Direction.Down
        fxs_b = [x for x in fxs if x.mark == Mark.D and x.dt > fx_a.dt and x.fx < fx_a.fx]
        if not fxs_b:
            return None, bars

        fx_b = fxs_b[0]
        for fx in fxs_b[1:]:
            if fx.low <= fx_b.low:
                fx_b = fx`

是不是缺了用min_bi_len过滤？
否则如图片

这样的，第二根K线和导数第二根K线，就无法连城笔，因为第3根最长，查找的时候总是把它找出来，可它又不满足 >= min_bi_len 条件