Match against List and pil

Question

I am new to pil package. I wish to merge only those images whose name is in the list.

w.txt file contains these filename

1
2

Folder contains 4 images 1.png, 2.png, 3.png and 4.png

from PIL import Image

with open('w.txt') as f:
    my_list =list(f)
    print(my_list)

img_01 = Image.open("1.png")
img_02 = Image.open("2.png")
img_03 = Image.open("3.png")
img_04 = Image.open("4.png")

img_01_size = img_01.size
img_02_size = img_02.size
img_03_size = img_02.size
img_02_size = img_02.size

new_im = Image.new('RGB', (2*img_01_size[0],2*img_01_size[1]), (250,250,250))

new_im.paste(img_01, (0,0))
new_im.paste(img_02, (img_01_size[0],0))
new_im.paste(img_03, (0,img_01_size[1]))
new_im.paste(img_04, (img_01_size[0],img_01_size[1]))

new_im.save("merged_images.png", "PNG")

Unsure of where to loop within pil. kindly help.

Answer 1

This code should work (I haven tested it on a small sample of 5 images in a 3x2 grid). Of course, if the grid's size depends on the number of images, you'll want to replace the values for grid_width and grid_height in the code with values calculated from len(my_images):

from PIL import Image

with open('w.txt') as f:
    my_list =list(f)
    print(my_list)

my_images = [Image.open(f"{i.strip()}.png") for i in my_list if i.strip()]
width, height = my_images[0].size

grid_width, grid_height = 6, 6

new_im = Image.new('RGB', (grid_width * width, grid_height * height), (250,250,250))

for i, image in enumerate(my_images):
    y, x = divmod(i, grid_width)
    new_im.paste(image, (x * width, y * height))

new_im.save("merged_images.png", "PNG")