python使用numpy中的savez（）儲存非陣列資料到本地。

報錯：

IndexError: only integers, slices (`:`), ellipsis (`...`), numpy.newaxis (`None`) and integer or boolean arrays are valid indices

看下面的程式碼例項：

import numpy as np


# 簡單的陣列儲存
arr = np.array([[1, 2], [3, 4]])
np.save('/Users/lilong/Desktop/mm.npy',arr)
arr_load=
 
np.load('/Users/lilong/Desktop/mm.npy')
print(arr_load,'\n\n',arr_load[0])


# 非結構化資料儲存
str_ = 'abc'
arr_ = np.array([[1, 2], [3, 4]])
dict_ = {'a' : 1, 'b': 2}
np.savez('/Users/lilong/Desktop/nn.npz', st= str_, ar = arr_, dic= dict_)


data = np.load('/Users/lilong/Desktop/nn.npz')
print('....\n',data['st'],'\n'
 
,data['st'][()])
print('....\n',data['ar'],'....\n',data['ar'][0],'\n\n',data['ar'][()][0])
print('....\n',data['dic'],'\n\n',data['dic'][()])
#print('....\n',data['dic']['a'])  # 報錯
print('....\n',data['dic'][()]['a'])

執行結果：

[[1 2]
 [3 4]] 

 [1 2]
....
 abc 
 abc
....
 [[1 2]
 [3 4]] ....
 [1 2
 
] 

 [1 2]
....
 {'a': 1, 'b': 2} 

 {'a': 1, 'b': 2}
....
 1