Numpy学习笔记：三
numpy学习笔记-仅供学习使用# 基本索引及切片import numpy as npar = np.arange(20)print(ar)print(ar[4])print(ar[3:6])print('-----')# 一维数组索引及切片ar = np.arange(16).reshape(4,4)print(ar, '数组轴数为%i' %ar.ndim) # 4*4的数组print(ar[2], '数组轴数为%i' %ar[2].ndim) # 切片为下一维度的一.
