nlcpy.save

nlcpy.save(file, arr, allow_pickle=True, fix_imports=True)

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

Parameters

filefile, 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 file name if it does not already have one.

arrarray_like

Array data to be saved.

allow_picklebool, 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 Python 2 and Python 3). Default: True

fix_importsbool, optional

Only useful in forcing objects in object arrays on Python 3 to be pickled in a Python 2 compatible way. If fix_imports is True, pickle will try to map the new Python 3 names to the old module names used in Python 2, so that the pickle data stream is readable with Python 2.

See also

savez

Saves several arrays into a single file in uncompressed .npz format.

savetxt

Saves an array to a text file.

load

Loads arrays or pickled objects from .npy, .npz or pickled files.

Note

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

Examples

>>> import nlcpy as vp
>>> from tempfile import TemporaryFile
>>> outfile = TemporaryFile()

>>> x = vp.arange(10)
>>> vp.save(outfile, x)

>>> _ = outfile.seek(0) # Only needed here to simulate closing & reopening file
>>> vp.load(outfile)
array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])