How to display images in a row with IPython display?

This worked for me:

from matplotlib.pyplot import figure, imshow, axis
from matplotlib.image import imread

def showImagesHorizontally(list_of_files):
    fig = figure()
    number_of_files = len(list_of_files)
    for i in range(number_of_files):
        a=fig.add_subplot(1,number_of_files,i+1)
        image = imread(list_of_files[i])
        imshow(image,cmap='Greys_r')
        axis('off')

You can also use HTML:

from IPython.display import display, HTML
def make_html(folder, image):
     return '<img src="{}" style="display:inline;margin:1px"/>'
            .format(os.path.join(folder, image))

display(HTML(''.join(make_html(f, x)) for x in files))

In my case, by setting a margin will fix the un-alignment (and IMHO produce nicer results).

An alternative solution using Jupyter built-in facilities (IPython.display and ipywidgets):

from IPython.display import display
from ipywidgets import widgets, HBox

imageA = widgets.Image(value=open('path/to/image/a.jpg', 'rb').read())
imageB = widgets.Image(value=open('path/to/image/b.jpg', 'rb').read())

hbox = HBox([imageA, imageB])
display(hbox)

# optional: you can show more hboxes, boxes will be arranged vertically
display(anotherHbox) # 2nd
display(yetAnotherHbox) # 3rd
display(andAnotherHbox) # 4th

References:

• Usage of widgets.Image: https://ipywidgets.readthedocs.io/en/latest/examples/Widget%20List.html#Image
• HBox and layout: https://ipywidgets.readthedocs.io/en/latest/examples/Widget%20Styling.html
• IPython display: https://ipython.readthedocs.io/en/stable/api/generated/IPython.display.html#IPython.display.display

Be careful that IPython display module also has Image class, which is different from widgets.Image and not compatible with HBox.