numpy.ndarray.size()方法|Python

原文:https://www . geesforgeks . org/numpy-ndarray-size-method-python/

numpy.ndarray.size() 函数返回数组中元素的个数。它等于 np.prod(a.shape)，即数组维数的乘积。

语法:num py . ndaarray . size(arr)

参数:
arr : 【阵 _ 象】输入阵。

返回:【int】数组中元素的个数。

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