extends an image array

import os

import PIL
import PIL.Image
import PIL.ImageOps

import numpy as np

print('Number of images before: {}'.format(X_train.shape[0]))

dirname = 'extra images'
for filename in os.listdir(dirname):
    try:
        img = PIL.Image.open(os.path.join(dirname, filename))
        img = PIL.ImageOps.fit(img, (28, 28))
        img = PIL.ImageOps.expand(img, 2)
        new_image = np.array(img)
        new_image.resize((1, 32, 32, 3))
        X_train = np.concatenate([X_train, new_image])
    except Exception as e:
        pass

print('Number of images after: {}'.format(X_train.shape[0]))