Pack images in the current dir and subfolders for printing

pack.py

#!usr/bin/python3
import os
from PIL import Image
from rectpack import newPacker

IMAGES = []

# to lazy to handle rotation right now
PACKER = newPacker(rotation=False)

# printers dont like pixels on the page border
# set to 0 if you dont want to print
OFFSET = 50
# 72 DPI 595 Pixels 	842 Pixels 
# 200 DPI 	1654 Pixels 	2339 Pixels 
# 300 DPI 	2480 Pixels 	3508 Pixels 
A4WIDTH = 1060
A4HEIGHT = 1500

print("WIDTH: %s HEIGHT: %s OFFSET: %s" % (A4WIDTH, A4HEIGHT, OFFSET))

print("loading images")
for folder in os.walk("."):
    dirpath, dirnames, files = folder
    for file in files:
        # print("opening %s" % file)
        if file.endswith(".JPG"):
            img = Image.open(os.path.join(dirpath, file))
            IMAGES.append(img)
print("loaded %s images" % len(IMAGES))

print("creating rects")
for i in range(len(IMAGES)):
    img = IMAGES[i]
    PACKER.add_rect(img.width, img.height, rid=i)

PACKER.add_bin(A4WIDTH - OFFSET * 2, A4HEIGHT - OFFSET * 2, count=100)

print("packing them images")
PACKER.pack()

print("exporting")

INDEX = 1
for rectbin in PACKER:
    page = Image.new("RGB", (A4WIDTH, A4HEIGHT), "white")
    for rect in rectbin:
        img = IMAGES[rect.rid]
        page.paste(img, (rect.x + OFFSET, rect.y + OFFSET))
    page.save("export%sx%s_%s.jpeg" % (A4WIDTH, A4HEIGHT, INDEX))
    INDEX += 1
print("Exported %s export%sx%s_*.jpeg files" % (INDEX -1, A4WIDTH, A4HEIGHT))
print("finished")