Python 3 keras: UnpicklingError: pickle data was truncated for partly downloaded keras cifar10 dataset

Question

I need some help to fix my errors. I tried to load the cifar10 dataset and it wasn't able to download completely the first time due to unstable internet, subsequently re-running the code with a stable internet gives this error:

UnpicklingError:                       
Traceback (most recent call last)
<ipython-input-16-9117078ebdb2> in <module>()
  1 from keras.datasets import cifar10
----> 2 (x_train, y_train), (x_test, y_test) = cifar10.load_data()

c:\users\keboc\anaconda3\envs\tensorflow_1.8\lib\site- 
packages\keras\datasets\cifar10.py in load_data(label_mode)
 32 
 33     fpath = os.path.join(path, 'test_batch')
---> 34     x_test, y_test = load_batch(fpath)
 35 
 36     y_train = np.reshape(y_train, (len(y_train), 1))

c:\users\keboc\anaconda3\envs\tensorflow_1.8\lib\site-packages\keras\datasets\cifar.py in load_batch(fpath, label_key)
 25             d = cPickle.load(f, encoding='bytes')
 26             # decode utf8
---> 27             #d_decoded = {}
 28             for k, v in d.items():
 29                 d_decoded[k.decode('utf8')] = v

UnpicklingError: pickle data was truncated

I loaded the dataset with the code:

from keras.datasets import cifar10
(x_train, y_train), (x_test, y_test) = cifar10.load_data() 

Please help me to fix this.

Thanks alot.

Solution

Remove the file ~/.keras/datasets/cifar-10-batches-py.tar.gz and possibly the folder ~/.keras/datasets/cifar-10-batches-py if it exists and try again, it should redownload the file, hopefully succeeding this time.

Comments

[kebochiG]

The file and folder aren't present in that directory. Only the .py files (cifar10.py). So there's nothing to remove.

[Dr. Snoopy]

@kebochiG Are you sure you are looking in the right place? It sounds like you are looking inside keras' source code, I am talking about the ~/.keras folder, note the . (period) meaning it is a hidden folder in your home folder.

[kebochiG]

Oh, okay. I'm probably not looking in the right place @Matias. I am currently looking at "C:\Users\username\Anaconda3\envs\tensorflow_1.8\Lib\site-pa‌​ckages\keras\dataset‌​s" directory. Please how can I get to the right place. I also see no hidden folder in my home folder ( where my .ipynb file is) and I have the view hidden folders option ticked.