python数组和列表的区别

#eg1_1

import numpy as np

a = np.array([[1,2,0,1],[1,6,9,55],[7,8,9,5]])#a为数组

print(a.T)

#Result：

[[ 1  1  7]

 [ 2  6  8]

 [ 0  9  9]

 [ 1 55  5]]

#eg1_2

a = [[1,2,0,1],[1,6,9,55],[7,8,9,5]] #a为列表

print(a.T)

#Result：

'list' object has no attribute 'T'