Creating a grid of images

image_grid.py

from PIL import Image

# Load created images; for example 4
amsterdam = Image.open('Amsterdam.png')
hague = Image.open('The_Hague.png')
rotterdam = Image.open('Rotterdam.png')
utrecht = Image.open('Utrecht.png')

# Retrieve width and height original images
width = amsterdam.size[0]
height = amsterdam.size[1]

# Create new image, twice as large in both dimensions
new_im = Image.new('RGB', (width*2,height*2))

# Paste images in new image
new_im.paste(amsterdam, (0,0))
new_im.paste(hague, (width,0))
new_im.paste(rotterdam, (0,height))
new_im.paste(utrecht, (width,height))

# Show the new image of a grid of cities
new_im.show()