Проблема с кодом, с библиотекой Pillow. Мне нужно чтобы шрифт был с чёрной обводкой, нужно отредачить код

import os
from PIL import Image, ImageDraw, ImageFont
 
import random
 
INIT_IMAGES_DIRECTORY = 'init_images'
RESULT_IMAGES_DIRECTORY = 'result_images'
TEXT_FILE = 'text.txt'
 
 
def main():
    images_names = os.listdir(INIT_IMAGES_DIRECTORY)
    image_name = random.choice(images_names)
    image_path = os.path.join(INIT_IMAGES_DIRECTORY, image_name)
    image = Image.open(image_path)
    with open(TEXT_FILE, 'r', encoding='utf-8') as txt_file:
        phrases = txt_file.read().split('\n')
    phrase = random.choice(phrases)
    size_font = int(image.height * 0.07)
    while True:
        font = ImageFont.truetype('impact.ttf', size=size_font)
        font_size = font.getsize(phrase)
        if font_size[0] > image.width:
            size_font -= 1
        else:
            break
    position_x = (image.width - font_size[0])/2
    draw_text = ImageDraw.Draw(image)
    draw_text.text(
        (position_x, 0),
        phrase,
        font=font,fill="white")
    name = image_name.split('.')[0]
    format = image_name.split('.')[1]
    result_image_name = name + '_result.' + format
    result_images_path = os.path.join(RESULT_IMAGES_DIRECTORY, result_image_name)
    print(result_images_path)
    image.save(result_images_path)
 
 
 
 
 
if __name__ == '__main__':
    main()