`numpy:save`

source: /numpy/lib/_npyio_impl.py :504

Signature

def save ( file , arr , allow_pickle = True )

Summary

Save an array to a binary file in NumPy .npy format.

Parameters

file : file, str, or pathlib.Path: File or filename to which the data is saved. If file is a file-object, then the filename is unchanged. If file is a string or Path, a .npy extension will be appended to the filename if it does not already have one.
arr : array_like: Array data to be saved.
allow_pickle : bool, optional: Allow saving object arrays using Python pickles. Reasons for disallowing pickles include security (loading pickled data can execute arbitrary code) and portability (pickled objects may not be loadable on different Python installations, for example if the stored objects require libraries that are not available, and not all pickled data is compatible between different versions of Python). Default: True

Notes

For a description of the .npy format, see numpy.lib.format.

Any data saved to the file is appended to the end of the file.

Examples

import numpy as np

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from tempfile import TemporaryFile
outfile = TemporaryFile()

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x = np.arange(10)
np.save(outfile, x)

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_ = outfile.seek(0) # Only needed to simulate closing & reopening file
np.load(outfile)

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with open('test.npy', 'wb') as f:
    np.save(f, np.array([1, 2]))
    np.save(f, np.array([1, 3]))
with open('test.npy', 'rb') as f:
    a = np.load(f)
    b = np.load(f)

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print(a, b)

`numpy:save`

Signature

Summary

Parameters

Notes

Examples

See also

Aliases

Referenced by

This package