Python + 股票： 个股资讯表 - Jacky Liu's Blog
Python + 股票： 个股资讯表
---- 以上是 Vim 在全屏模式下的截图。全屏模式下 Vim 没有了程序标签栏，并且覆盖了 OS 的系统任务栏。用来切换全屏模式的按键定义：
nnoremap <S-F10> :silent !wmctrl -r :ACTIVE: -b toggle,fullscreen<CR>
需要外部命令 wmctrl 可用。感谢 闲耘，是从他的 vimrc 里抄来的。
---- 基本搞定了个股资讯表。内容包括新闻动态、重大事项、公司公告。
---- 表的结构：<代码> <日期> <时间> <类型> <来源> <序号> <内容> <属性>。下面一条查询语句:
SELECT t1.代码, t1.日期, t1.时间, t1.类型, t1.来源, t1.序号, t1.内容, t1.属性 FROM 个股资讯 AS t1 JOIN ( SELECT 代码, 类型, MAX(日期) AS 最大日期 FROM 个股资讯 GROUP BY 类型, 代码 ) AS t2 ON t1.代码=t2.代码 AND t1.类型=t2.类型 AND t1.日期=t2.最大日期;
耗时 20 多秒，读出 12000 多条记录。不知道是否设计有问题，怎么会这么慢。眼下没时间深究，先这样吧。
---- Plotting 模块改用多进程也基本搞定，结果比预想的还要好。我的电脑是双核的，所以在主进程之外又建立两个工作进程来执行绘图任务。粗略统计，与单进程相比的速度提升在 120% ~ 130% 之间，现在绘制一幅图形大概只需要 3 到 4 秒。
---- 但是遇到一个神秘 bug，好久才搞定。好像必须给进程对象的建立留有足够的时间，否则进程跑起来会出问题。目前在程序里加了一个延时语句 sleep(0.3)，看上去是好了。因为程序结构比较复杂，没心思去重现它了，能用就行，也先这样吧。
---- 接下来要把图形再优化一下，新的内容加进去。差不多了以后开始建日线统计表。
2011年11月07日 13:55
这个好东西能分享么？？
2011年12月10日 00:41
@ywchen2000: 这个跟绘图脚本不一样，绘图脚本本来就是独立的，而这个是整个系统的一部分，单拿出来没法用。
2023年1月25日 19:26
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