python - 来自文本文件的 Numpy 矩阵

Question

我正在将矩阵写入文本文件，需要在另一个 python 脚本中读取该文件。第二个脚本需要将文本返回到 numpy 数组中。我一直在努力寻找如何做到这一点，任何帮助将不胜感激。下面给出了该数组的两个示例:

[[ 0.  0. -0.]
 [ 0.  0.  0.]
 [ 0.  0. -0.]
 [ 0.  0.  0.]
 [ 0.  0.  0.]
 [ 0.  0.  0.]
 [ 0.  0.  0.]
 [ 0.  0.  0.]
 [ 0.  0.  0.]
 [ 0.  0.  0.]
 [ 0.  0.  0.]]

或

[[ 0.          0.         -0.03011621]
 [ 0.          0.          0.        ]
 [ 0.          0.          0.        ]
 [ 0.          0.          0.        ]
 [ 0.          0.          0.        ]
 [ 0.          0.          0.        ]
 [ 0.          0.          0.        ]
 [ 0.          0.          0.        ]
 [ 0.          0.          0.        ]
 [ 0.          0.         -0.06023241]
 [ 0.          0.         -0.01204648]]

Answer 1

要保存到文本文件，请使用 np.savetxt

In [115]: x = np.zeros((10, 3))

In [116]: np.savetxt('/tmp/test.out', x)

要加载，请使用 np.loadtxt 或 np.genfromtxt :

In [117]: y = np.genfromtxt('/tmp/test.out')

In [120]: y.shape
Out[120]: (10, 3)