numpy基础练习

import numpy as np

#导入 numpy 包

data1 = [1,2,3,4,5] 
array1 = np.array(data1)

array1

array([1, 2, 3, 4, 5])

data2 = [[1,3,5],[2,4,6]]
array2 = np.array(data2)

array2

array([[1, 3, 5],
       [2, 4, 6]])

#索引和赋值

array1[2]

3

array1[1]=1
array1

array([1, 1, 3, 4, 5])