如何使用numpy分别在单个输出文件中保存多个数据

Question

如何使用 Date time id descriptive 0 2017-1-1 12:30 124562 American electronic commerce and cloud computing company based in Seattle 1 2017-1-2 12:40 124565 Amazon has separate retail websites for the United States 2 2017-1-3 12:45 124561 In 2020, Amazon will build a new downtown Seattle building 在单个输出文件中连续保存多个数据？例如，输出文件应包含

numpy

Answer 1

您只需将打开的文件句柄传递给numpy.savetxt()：

In [1]: import numpy as np

In [2]: a = np.zeros((3,3))

In [3]: b = np.ones((5,6))

In [4]: with open('mix.txt', 'w') as f:
   ...:     np.savetxt(f, a, fmt='%g')
   ...:     f.write('my comment followed by a new array:\n')
   ...:     np.savetxt(f, b, fmt='%g')
   ...:     

In [5]: !more mix.txt
0 0 0
0 0 0
0 0 0
my comment followed by a new array:
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1