How to Save NumPy Arrays as Human-Readable CSV Files?

Saving NumPy Arrays as Human-Readable CSV Files

NumPy offers a convenient way to export data into a human-readable format suitable for various use cases. To achieve this, we leverage the numpy.savetxt function.

To dump a 2D NumPy array into a CSV file, follow these steps:

1. Import NumPy.
2. Convert your array to a NumPy array using numpy.asarray().
3. Specify the desired file name and delimiter for the CSV file.
4. Use numpy.savetxt() to save the array to the specified file.

Example:

Consider the following 2D NumPy array:

a = numpy.asarray([ [1,2,3], [4,5,6], [7,8,9] ])

To export this array to a CSV file named "foo.csv" with a comma separator, use the following code:

import numpy
numpy.savetxt("foo.csv", a, delimiter=",")

This will create a CSV file containing the array's values in a human-readable format:

1,2,3
4,5,6
7,8,9

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