Script to combine multiple images into a single one.

image_combine.py

import sys
from PIL import Image
from itertools import islice

n_factors = list()

def factors(n, i):
    if i==0:
        return
    elif n%i == 0:
        n_factors.append(i)
    return factors(n, i-1)

def xy(n):
    global n_factors
    n_factors = []
    factors(n, n)
    n_factors.sort()
    x = n_factors[int(len(n_factors)/2)]
    return x, int(n/x)

def image_combine(imgs:list):
    x,y = xy(len(imgs))
    it = iter(imgs)
    img_list = [list(islice(it, x)) for i in range(y)]

    images = []
    total_width = 0
    total_height = 0
    for i in range(y):
        images.append([Image.open(img_list[i][j]) for j in range(x)])
        widths, heights = zip(*(j.size for j in images[i]))
        total_width = max([sum(widths), total_width])
        total_height += max(heights)

    new_im = Image.new('RGB', (total_width, total_height))

    y_offset = 0
    for imx in images:
        x_offset = 0
        max_height = 0
        for imy in imx:
            new_im.paste(imy, (x_offset, y_offset))
            x_offset += imy.size[0]
            max_height = max([max_height,imy.size[1]])
        y_offset += max_height

    new_im.save('test.png')


if __name__=="__main__":

    imgs = [
        "1.png",
        "2.png",
        "3.png",
        "4.png",
        "5.png",
        "6.png",
        "3.png",
        "2.png",
        "1.png"
    ]
    image_combine(imgs)