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最近需要分析数据，本人非IT专业，只是初学者有一txt文件，里面的格式如下：
stress x y z
0.000250000000000009 0.171678725155313 -0.166243862594007 -0.0507885785667664
0.000500000000000019 0.301346153730593 0.00665867382051378 0.0359111717255405
0.000750000000000028 0.244878198559931 0.0671675552139944 -0.0141711155577144
0.00100000000000004 0.297095234582817 -0.0844552269436686 -0.077200157648918
0.00125000000000005 0.25436178288527 -0.0559641556209058 -0.035147455614101
0.00150000000000006 0.181007467357577 -0.082240942497938 -0.106490863472682
0.00175000000000007 0.272368743956985 -0.192445793547587 -0.14111856963662
0.00200000000000008 0.133739727110992 0.145915183990753 0.161372769265848
0.00225000000000009 0.389157786079855 -0.0995508874549254 0.0200997053623325
0.00250000000000009 0.265658468022887 -0.0444186511370858 -0.0514667801581863
请问我要怎么读取可以让是以数组的形式，之后要进行某一列的循环。
急求，卡了好久，谢谢！
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