numpy genfromtxt列
作者：互联网
我遇到了numpy genfromtxt似乎很愚蠢的简单问题.这是我的代码的(非常)简化版本：
import numpy as np
in_file_1 = raw_input ('enter name of template file to be scaled:\n')
spec_1 = np.genfromtxt(in_file_1, delimiter = [8,24], dtype =float)
print spec_1
我正在读取的文件非常简单,两列没有标题等：
6392.01 0.90286163
6392.05 0.88731778
6392.09 0.87789831
6392.13 0.87716535
6392.16 0.88523003
6392.20 0.90948176
6392.24 0.93056874
6392.28 0.95782283
6392.32 0.98056805
6392.36 0.99623797
6392.39 0.99458828
6392.43 0.9848269
6392.47 0.96011146
6392.51 0.92864767
当我在python命令行上使用genfromtxt阅读以上内容时,它给了我两列的数组：
>>> import numpy as np
>>> in_file_1 = raw_input ('enter name of template file to be scaled:\n')
enter name of template file to be scaledl_1714650_052_no_head.txt
>>> spec_1 = np.genfromtxt(in_file_1, delimiter = [8,24], dtype =float)
>>> spec_1
array([[ 6.39201000e+03, 9.02861630e-01],
[ 6.39205000e+03, 8.87317780e-01],
[ 6.39209000e+03, 8.77898310e-01],
[ 6.39213000e+03, 8.77165350e-01],
[ 6.39216000e+03, 8.85230030e-01],
[ 6.39220000e+03, 9.09481760e-01],
[ 6.39224000e+03, 9.30568740e-01],
[ 6.39228000e+03, 9.57822830e-01],
[ 6.39232000e+03, 9.80568050e-01],
[ 6.39236000e+03, 9.96237970e-01],
[ 6.39239000e+03, 9.94588280e-01],
[ 6.39243000e+03, 9.84826900e-01],
[ 6.39247000e+03, 9.60111460e-01],
[ 6.39251000e+03, 9.28647670e-01]])
>>>
但是,当我将其作为本文顶部的脚本(read_test.py)运行时,它将返回一串字符串：
[scrooge:Acc_cont_removal/All_stars/Test] darryl% python read_test.py
enter name of template file to be scaled:
l_1714650_052_no_head.txt
[[ 6.39201000e+03 9.02861630e-01]
[ 6.39205000e+03 8.87317780e-01]
[ 6.39209000e+03 8.77898310e-01]
[ 6.39213000e+03 8.77165350e-01]
[ 6.39216000e+03 8.85230030e-01]
[ 6.39220000e+03 9.09481760e-01]
[ 6.39224000e+03 9.30568740e-01]
[ 6.39228000e+03 9.57822830e-01]
[ 6.39232000e+03 9.80568050e-01]
[ 6.39236000e+03 9.96237970e-01]
[ 6.39239000e+03 9.94588280e-01]
[ 6.39243000e+03 9.84826900e-01]
[ 6.39247000e+03 9.60111460e-01]
[ 6.39251000e+03 9.28647670e-01]]
[scrooge:Acc_cont_removal/All_stars/Test] darryl%
我已经尝试了各种配置的定界符等,但是我无法弄清楚正在发生什么,并且几天前这段代码运行良好.在python v2.7的OSX(Lion)上运行.
任何想法表示感谢.
达里尔
解决方法:
您得到的正是您应该得到的答案！
>>> numpy.genfromtxt('testfile', delimiter=[8,24], dtype = float)
array([[ 6.39201000e+03, 9.02861630e-01],
[ 6.39205000e+03, 8.87317780e-01],
[ 6.39209000e+03, 8.77898310e-01],
[ 6.39213000e+03, 8.77165350e-01],
[ 6.39216000e+03, 8.85230030e-01],
[ 6.39220000e+03, 9.09481760e-01],
[ 6.39224000e+03, 9.30568740e-01],
[ 6.39228000e+03, 9.57822830e-01],
[ 6.39232000e+03, 9.80568050e-01],
[ 6.39236000e+03, 9.96237970e-01],
[ 6.39239000e+03, 9.94588280e-01],
[ 6.39243000e+03, 9.84826900e-01],
[ 6.39247000e+03, 9.60111460e-01],
[ 6.39251000e+03, 9.28647670e-01]])
>>> print _
[[ 6.39201000e+03 9.02861630e-01]
[ 6.39205000e+03 8.87317780e-01]
[ 6.39209000e+03 8.77898310e-01]
[ 6.39213000e+03 8.77165350e-01]
[ 6.39216000e+03 8.85230030e-01]
[ 6.39220000e+03 9.09481760e-01]
[ 6.39224000e+03 9.30568740e-01]
[ 6.39228000e+03 9.57822830e-01]
[ 6.39232000e+03 9.80568050e-01]
[ 6.39236000e+03 9.96237970e-01]
[ 6.39239000e+03 9.94588280e-01]
[ 6.39243000e+03 9.84826900e-01]
[ 6.39247000e+03 9.60111460e-01]
[ 6.39251000e+03 9.28647670e-01]]
这只是打印和获取结果表示之间的区别.
>>> result = numpy.genfromtxt('testfile', delimiter=[8,24], dtype = float)
>>> repr(result)
'array([[ 6.39201000e+03, 9.02861630e-01],\n [ 6.39205000e+03, 8.87317780e-01],\n [ 6.39209000e+03, 8.77898310e-01],\n [ 6.39213000e+03, 8.77165350e-01],\n [ 6.39216000e+03,
8.85230030e-01],\n [ 6.39220000e+03, 9.09481760e-01],\n [ 6.39224000e+03, 9.30568740e-01],\n [ 6.39228000e+03, 9.57822830e-01],\n [ 6.39232000e+03, 9.80568050e-01],\n
[ 6.39236000e+03, 9.96237970e-01],\n [ 6.39239000e+03, 9.94588280e-01],\n [ 6.39243000e+03, 9.84826900e-01],\n [ 6.39247000e+03, 9.60111460e-01],\n [ 6.39251000e+03, 9.2864
7670e-01]])'
>>> str(result)
'[[ 6.39201000e+03 9.02861630e-01]\n [ 6.39205000e+03 8.87317780e-01]\n [ 6.39209000e+03 8.77898310e-01]\n [ 6.39213000e+03 8.77165350e-01]\n [ 6.39216000e+03 8.85230030e-01]\n [ 6.39220000e+03
9.09481760e-01]\n [ 6.39224000e+03 9.30568740e-01]\n [ 6.39228000e+03 9.57822830e-01]\n [ 6.39232000e+03 9.80568050e-01]\n [ 6.39236000e+03 9.96237970e-01]\n [ 6.39239000e+03 9.94588280e-01]\n [
6.39243000e+03 9.84826900e-01]\n [ 6.39247000e+03 9.60111460e-01]\n [ 6.39251000e+03 9.28647670e-01]]'
注意str版本没有逗号,而repr有吗？
标签：genfromtxt,python,numpy 来源： https://codeday.me/bug/20191101/1983218.html