如何用python算方差

页面:/news/view-448923/ | 耗时:0.0516 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=448923 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=448923 LIMIT 0,1
select * from tbl_Articles_sphinx where id=448923 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2884211,1899456,1142677,2772343,433326,1307397,3376977,953254,1046033,1125721,810056,1149940,2071778,995487,1803682,691859,1903263,1282199,2424483,458823,1192415,574405,520573,376231,375741,672630,469779,841145,2181788,2467935) ORDER BY field (ArticleID,2884211,1899456,1142677,2772343,433326,1307397,3376977,953254,1046033,1125721,810056,1149940,2071778,995487,1803682,691859,1903263,1282199,2424483,458823,1192415,574405,520573,376231,375741,672630,469779,841145,2181788,2467935)