Convert grayscale bitmap image to a csv where each cell is 0-255

bmp2csv.py

#!/usr/bin/env python3

from PIL import Image
import csv

def convert_image_to_csv(image_path, csv_path):
    # Open the image
    with Image.open(image_path) as img:
        # Convert image to grayscale (if it's not already)
        img = img.convert('L')
        width, height = img.size

        # Load the image pixels
        pixels = list(img.getdata())
        pixels = [pixels[i * width:(i + 1) * width] for i in range(height)]

        # Write to CSV
        with open(csv_path, mode='w', newline='') as file:
            writer = csv.writer(file)
            for row in pixels:
                writer.writerow(row)

if __name__ == '__main__':
    convert_image_to_csv(argv[1], argv[2])