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
