NumPy ndarray.size() Method | Get Number of Elements in NumPy Array

The ndarray.size() method returns the number of elements in the NumPy array. 

It works the same as np.prod(a.shape), i.e., the product of the dimensions of the array.

Example

Python3

import numpy as np
arr = np.zeros((3, 4, 2), dtype = np.complex128)
gfg = arr.size
print (gfg)

Output :

24

Syntax

 Syntax: numpy.ndarray.size(arr) 

Parameters 

• arr : [array_like] Input array. 

Return : [int] The number of elements in the array.

How to Find Number of Elements in NumPy Array

To find the number of elements in the NumPy array we use ndarray.size() method of the NumPy library in Python.

Let us understand it better with an example:

Python3

import numpy as geek

arr = geek.zeros((3, 4, 2), dtype = geek.complex128)

gfg = geek.prod(arr.shape)

print (gfg)

Output :

24