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python定义一个二维数组并初始化
python定义⼀个⼆维数组并初始化#coding=utf-8import numpy as npimage =[[0 for col in range(5)] for row in range(3)]a = np.array(image)#第⼀种⽅法是先⽣成⼀个list 再转换成数组;0 是数组初始化的值;数组较⼤时候效率较慢。new_image =np.zeros((3,5))#第⼆种⽅法是直...
python定义⼀个⼆维数组并初始化#coding=utf-8import numpy as npimage =[[0 for col in range(5)] for row in range(3)]a = np.array(image)#第⼀种⽅法是先⽣成⼀个list 再转换成数组;0 是数组初始化的值;数组较⼤时候效率较慢。new_image =np.zeros((3,5))#第⼆种⽅法是直...