Question

我有这个小脚本：

from numpy import *
import numpy as np
import scipy.spatial as spt

X= np.loadtxt('edm')
myfile = open('edm.txt','w')

V= spt.distance.pdist(X.T,'sqeuclidean')
P = spt.distance.squareform(V)  
print P
myfile.write(P)

这个矩阵：

           0  199.778354301   
201.857546133 0

如果我运行我的程序;我在终端得到这个（根据“打印”）：

[[     0.          80657.85977805]
 [ 80657.85977805      0.        ]]

但在我的输出文件中;我得到如下无效字符：

��������z°¶¡±Û@z°¶¡±Û@��������

你知道为什么吗？感谢

Answer 1

You can use NumPy savetxt method to save arrays and not worry about codification.

As in the Docs,

>>> np.savetxt('edm.txt', x)   # x is an array

Answer 2

The file contains the binary representation of the numbers in the matrix.


$ od -t x1z edm.txt 
0000000 00 00 00 00 00 00 00 00 79 a1 a6 c1 1d b1 f3 40  ........y......@
0000020 79 a1 a6 c1 1d b1 f3 40 00 00 00 00 00 00 00 00  y......@........
0000040

python输出文件的字符无效

2 个答案: