Notebook stuck in loading data set

[pehades]

Hi, I am having the following problem. I want to work with the CIFAR10 - data set (more specifically, I follow this course individually and I am trying to do the first assignment http://cs231n.github.io/assignments2018/assignment1/ ).

When I first open the code for linear_svm, the data set loads and everything is ok. But if I shut it down and open it some other time and try to run each sell again, then it gets stuck when I try to load again the data set. I have started learning python the last months, so I don't know what goes wrong.

The code for the first cell is:

# Run some setup code for this notebook.
from __future__ import print_function
import random
import numpy as np
from cs231n.data_utils import load_CIFAR10
import matplotlib.pyplot as plt



# This is a bit of magic to make matplotlib figures appear inline in the
# notebook rather than in a new window.
%matplotlib inline
plt.rcParams['figure.figsize'] = (10.0, 8.0) # set default size of plots
plt.rcParams['image.interpolation'] = 'nearest'
plt.rcParams['image.cmap'] = 'gray'

# Some more magic so that the notebook will reload external python modules;
# see http://stackoverflow.com/questions/1907993/autoreload-of-modules-in-ipython
%load_ext autoreload
%autoreload 2

Then the second cell is

# Load the raw CIFAR-10 data.
cifar10_dir = 'cs231n/datasets/cifar-10-batches-py'

# Cleaning up variables to prevent loading data multiple times (which may cause memory issue)


X_train, y_train, X_test, y_test = load_CIFAR10(cifar10_dir)

# As a sanity check, we print out the size of the training and test data.
print('Training data shape: ', X_train.shape)
print('Training labels shape: ', y_train.shape)
print('Test data shape: ', X_test.shape)
print('Test labels shape: ', y_test.shape)

Note: The command "from future import print_function" in the original notebook was after all the import commands. But when I runned this cell, it told me that it should be in the beginning of the file.

I would appreciate any help! I am a beginner in python and machine learning alone and currently I am highly stuck! Thanks