import sys

from PIL import Image
import os

def convert_pgm_to_png(pgm_file, png_file):
    # 打开 PGM 文件
    with Image.open(pgm_file) as img:
        # 将图片转换为 PNG 格式并保存
        img.save(png_file, "PNG")

if __name__ == '__main__':

    pgm_file = sys.argv[1]  # 输入 PGM 文件路径
    png_file = sys.argv[2]    # 输出 PNG 文件路径'  # 输出 PNG 文件路径
    # 检查文件是否存在
    if os.path.exists(pgm_file):
        convert_pgm_to_png(pgm_file, png_file)
        print(f"转换完成：{pgm_file} -> {png_file}")
    else:
        print(f"文件 {pgm_file} 不存在。")