numpy.ndarray.size() 方法 | Python

numpy.ndarray.size()函数返回数组中元素的数量。它等于 np.prod(a.shape)，即数组维度的乘积。

Syntax : numpy.ndarray.size(arr)

Parameters :
arr : [array_like] Input array.

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

代码#1：

# Python program explaining
# numpy.ndarray.size() function
  
# importing numpy as geek 
import numpy as geek
  
arr = geek.zeros((3, 4, 2), dtype = geek.complex128)
  
gfg = arr.size
  
print (gfg)

输出 ：

24

代码#2：

# Python program explaining
# numpy.ndarray.size() function
  
# importing numpy as geek 
import numpy as geek
  
arr = geek.zeros((3, 4, 2), dtype = geek.complex128)
  
gfg = geek.prod(arr.shape)
  
print (gfg)

输出 ：

24