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numpy.load () in Python

| | |

numpy.load() returns an input array from a file on disk with npy (.npy) extension.

Syntax: numpy.load (file, mmap_mode = None, allow_pickle = True, fix_imports = True, encoding = ’ASCII’)

Parameters:
file: : file-like object, string, or pathlib.Path The file to read. File-like objects must support the seek () and read () methods.
mmap_mode: If not None, then memory-map the file, using the given mode (see numpy.memmap for a detailed
description of the modes).
allow_pickle: Allow loading pickled object arrays stored in npy files.
fix_imports: Only useful when loading Python 2 generated pickled files on Python 3, which includes npy / npz files containing object arrays.
encoding: Only useful when loading Python 2 generated pickled files in Python 3, which includes npy / npz files containing object arrays.

Returns: Data stored in the file. For .npz files, the returned instance of NpzFile class must be closed to avoid leaking file descriptors.

Code # 1: Work

# Python program explaining
# load () function

 

import numpy as geek

 

a = geek.array (([i + j for i in range ( 3

  for j in range ( 3 )]))

# is printed.

print ( "a is:" )

print (a)

 

geek.save ( ’geekfile’ , a)

print ( "the array is saved in the file geekfile.npy" )

 
# the array is saved in the geekfile.npy file

b = geek.load ( ’geekfile.npy’ )

 
# array is loaded into b

print ( "b is:" )

print (b)

 
# b prints from geekfile.npy

print ( "b is printed from geekfile.npy" )

Output:

 a is: [0, 1 , 2, 1, 2, 3, 2, 3, 4] the array is saved in the file geekfile.npy b is: [0, 1, 2, 1, 2, 3, 2, 3, 4] b is printed from geekfile.npy 

Code # 2:

# Python program explaining
# load () function

 

import numpy as geek

 
# a and b are numpy arrays.

a = geek.array (([i + j for i in range ( 3

  for j in range ( 3 )]))

b = geek.array ([i + 1 for i in range ( 3 )])

 
# a and b are printed.

print ( "a is:" )

print (a)

print ( "b is:" )

print (b)

  
# a and b are stored in geekfile.npz

geek.savez ( ’geekfile.npz’ , a = a, b = b)

 

print ( " a and b are stored in geekfile.npz " )

  
# compressed file uploaded

c = geek.load ( ’geekfile.npz’ )

 

print ( "after loading ..."  )

print ( "a is: " , c [ ’ a’ ])

print ( "b is:" , c [ ’b’ ])

Output:

 a is: [0 1 2 1 2 3 2 3 4] b is: [1 2 3] a and b are stored in geekfile.npz after loading ... a is: [0 1 2 1 2 3 2 3 4] b is: [1 2 3 ] 

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