AttributeError: 'numpy.ndarray' object has no attribute 'items'

Question

For the following code, I am getting the error I have put in title:

import scipy.io as sio
import numpy as np

temp = np.load('temp.npy')
sio.savemat('final.mat',temp)

Although AttributeError is a common error in python, I did not find anything useful for 'items' as mentioned in the title. How can we fix this?

Padraic Cunningham · Accepted Answer · 2015-06-29 22:49:44Z

17

It takes a dict as the second argument not an array:

From the docs:

mdict : dict

Dictionary from which to save matfile variables.

I am not overly familiar but I imagine you pass the name as the key and the array as the value, something like:

sio.savemat('final.mat',{"foo":temp})

answered Jun 29, 2015 at 22:49

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2 Comments

Thanks! Do we have to convert arrays to dictionaries in order to save them as .mat file?

@A.M., as far as I can tell you pass a string as the key and the array as the value. There are other keywords that affect how the array is stored

abbas abaei · Accepted Answer · 2021-07-12 07:21:52Z

0

I solved this issue as follow:

from scipy.io import savemat
import numpy as np
num= np.arange(20)
mymat={'num':num}
savemat('mymat.mat', mymat)

answered Jul 12, 2021 at 7:21

abbas abaei

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