一只码畜 2020-03-01
1.数组
array()
...import numpy as np ...a=np.array(range(12)) #array()创建数组 ...print(a) [0,1,2,3,4,5,6,7,8,9,10,11]
a.shape()
...a.shape #shape查看属性 (12,) #数组长度为12 ...a.shape=2,3 #改成2行3列二维结构 ...print(a) [[0,1,2,3,4,5] [6,7,8,9,10,11]] ...a.shape=2,2,3 #改成2组2行3列三维结构[[[0,1,2] [3,4,5]][[6,7,8] [9,10,11]]]
arange()