numpy.alen() in Python

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 :

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# Python program explaining
# alen() function
   
import numpy as geek
  
# input array(2 * 3)
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 : 











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# Python program explaining 


# alen() function 


   


import numpy as geek 


  


# input array(1 * 3*3) 


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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