numpy.alen() in Python
Last Updated :
28 Dec, 2018
numpy.alen()
function is used to return the length of the first dimension of the input array.
Syntax : numpy.alen(arr)
Parameters :
arr : [array_like] Input array.
Return : [int]Length of the first dimension of arr.
Code #1 :
import numpy as geek
in_arr = geek.array([[ 2 , 0 , 7 ], [ 0 , 5 , 9 ]])
print ( "Input array : " , in_arr)
out_dim = geek.alen(in_arr)
print ( "Length of the first dimension of arr: " , out_dim)
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Output:
Input array : [[2, 0, 7], [0, 5, 9]]
Length of the first dimension of arr: 2
Code #2 :
import numpy as geek
in_arr = geek.arange( 9 ).reshape( 1 , 3 , 3 )
print ( "Input array : \n" , in_arr)
out_dim = geek.alen(in_arr)
print ( "Length of the first dimension of arr: " , out_dim)
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Output:
Input array :
[[[0 1 2]
[3 4 5]
[6 7 8]]]
Length of the first dimension of arr: 1
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