在一行上打印`numpy.ndarray` [英] Print `numpy.ndarray` on a single line

问题描述

使用scipy/numpy时，我确实获得了存储在numpy.ndarray

While using scipy/numpy, I do get information that I store into a numpy.ndarray

>>> a
array([[ 0.15555605,  0.51031528,  0.84580176,  0.06722675],
       [ 0.60556045,  0.62721023, -0.48979983, -0.04152777],
       [-0.78044785,  0.58837543, -0.21146041, -0.13568023],
       [ 0.        ,  0.        ,  0.        ,  1.        ]])
>>> print(a)
[[ 0.15555605  0.51031528  0.84580176  0.06722675]
 [ 0.60556045  0.62721023 -0.48979983 -0.04152777]
 [-0.78044785  0.58837543 -0.21146041 -0.13568023]
 [ 0.          0.          0.          1.        ]]

如何将结果打印在一行上?

How can I print the result on a single line?

我已经检查过了:

>>> numpy.get_printoptions()
{'precision': 8, 'threshold': 1000, 'edgeitems': 3, 'linewidth': 75, 'suppress': False, 'nanstr': 'nan', 'infstr': 'inf', 'formatter': None}

但是即使将linewidth设置为1000也不会改变此设置.有没有办法更改该类型的显示格式?

But even setting linewidth to 1000 does no change this. Is there a way to change the displayed format of that type?

是否还可以在每个数字之间添加逗号(例如数组显示，但不包含array(...))?

Is it also possible to add comma in between each number (like the array display but without the surrounding array(...))?

推荐答案

为了将numpy.array打印到一行，您可以使用其内置函数numpy.tolist()

In order to print a numpy.array into a single line, you can convert it to a list with its built-in function numpy.tolist()

示例:

import numpy as np

arr = np.array(((1, 2, 3), (4, 5, 6), (7, 8, 9)))

简单打印数组:

print(arr)
[[1, 2, 3]
 [4, 5, 6]
 [7, 8, 9]]

与numpy.tolist()相比:

print(array.tolist())
[[1, 2, 3], [4, 5, 6], [7, 8, 9]]

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