chapter-4/2-similarity-search-level-1.ipynb Broken float division

[gitgithan]

def plot_images(filenames, distances):
    images = []
    for filename in filenames:
        images.append(mpimg.imread(filename))
    plt.figure(figsize=(20, 10))
    columns = 4
    for i, image in enumerate(images):
        ax = plt.subplot(len(images) / columns + 1, columns, i + 1)

ax = plt.subplot(len(images) / columns + 1, columns, i + 1) should be ax = plt.subplot(len(images) // columns + 1, columns, i + 1), subplot requires integers for specifying number of rows/cols

[sidgan]

Good catch! Can you send this as a PR?

[zoldaten]

i have this error here:

IndexError                                Traceback (most recent call last)
Cell In[47], line 4
      1 for i in range(6):
      2     random_image_index = random.randint(0, num_images)
      3     distances, indices = neighbors.kneighbors(
----> 4         [feature_list[random_image_index]])
      5     # Don't take the first closest image as it will be the same image
      6     similar_image_paths = [filenames[random_image_index]] + \
      7         [filenames[indices[0][i]] for i in range(1, 4)]

IndexError: index 7999 is out of bounds for axis 0 with size 2176

how to fix ?

[gitgithan]

@zoldaten You may have been affected by #164.
I am waiting for the authors to provide feedback on my first PR before going further.
It is difficult for readers to make edits for reasons like hardware limitations and jupyter cell output management.

[zoldaten]

@gitgithan ok. hm, it starts working...
may be that was mix of pickle saves. i`ve tested stages of saves:
1.

pickle.dump(standard_feature_list, open('features-caltech101-resnet.pickle', 'wb'))
pickle.dump(filenames, open('filenames-caltech101.pickle','wb'))

pickle.dump(generator.classes, open('class_ids-caltech101.pickle',
                                    'wb'))
pickle.dump(filenames, open('filenames-caltech101.pickle', 'wb'))
pickle.dump(
    feature_list,
    open('features-caltech101-' + model_architecture + '.pickle', 'wb'))

pickle.dump(
    feature_list,
    open('features-caltech101-resnet-finetuned.pickle', 'wb'))

and moved saves every time not let them replace each other.
hm, works.

here`s my notebooks with depredations fixed:
notebooks.zip