numpy使用

# 安装 pip3 install numpy scipy matplotlib -i https://pypi.tuna.tsinghua.edu.cn/simple # 测试是否安装成功 # 进入pyton环境 python3 from numpy import * eye(4)import numpy as np # 创建一维数组 a = np.array([1,2,3]) print (a) a = np.arange(24) print (a.ndim) ...