Saving numpy array to json

Question

Im trying to save a numpy array to a json but since a ndarray is not JSON serializable I am converting them to lists. My problem is that this consumes an excesive amount of RAM. Is there any other lightweight method?

bousof · Accepted Answer · 2020-07-03 13:26:58Z

2

You can use numpyencoder:

import numpy as np
import json
from numpyencoder import NumpyEncoder

numpy_data = np.array([0, 1, 2, 3])

print(json.dumps(numpy_data, cls=NumpyEncoder))

answered Jul 3, 2020 at 13:26

bousof

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esantix Over a year ago

Shows great improvement!

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