Get the difference between two photoshop pallete files and generates a Imagemagick conversion list

photoshop_pallete_to_imagemagick_args.py

#!/usr/bin/env python3
from codecs import encode
import sys

def act_to_list(act_file):
    with open(act_file, 'rb') as act:
        raw_data = act.read()                           # Read binary data
    hex_data = encode(raw_data, 'hex')                  # Convert it to hexadecimal values
    total_colors_count = (int(hex_data[-7:-4], 16))     # Get last 3 digits to get number of colors total
    misterious_count = (int(hex_data[-4:-3], 16))       # I have no idea what does it do
    colors_count = (int(hex_data[-3:], 16))             # Get last 3 digits to get number of nontransparent colors

    # Decode colors from hex to string and split it by 6 (because colors are #1c1c1c)
    colors = [hex_data[i:i+6].decode() for i in range(0, total_colors_count*6, 6)]

    # Add # to each item and filter empty items if there is a corrupted total_colors_count bit
    colors = ['#'+i for i in colors if len(i)]

    return colors, total_colors_count

original_file = sys.argv[1]
new_file = sys.argv[2]

original_colors, original_colors_count = act_to_list(original_file)
new_colors, new_colors_count = act_to_list(new_file)

#if original_colors_count != new_colors_count:
#    print("Color counts dont match", original_colors_count, " != ", new_colors_count)

# Hack
if len(original_colors) > len(new_colors):
    color_count = len(new_colors)
else:
    color_count = len(original_colors)

for i in range(0, color_count):
    if original_colors[i] != new_colors[i]:
        print("-fill", original_colors[i], "-opaque", new_colors[i], end=" ")

print()