Python Code to compress jpg files

import os
import sys
import subprocess

def compress_jpg(file_path, quality):
    """
    Compress jpg files
    """
    if not os.path.exists(file_path):
        print("File not found")
        return
    if not os.path.isfile(file_path):
        print("Not a file")
        return
    if not file_path.endswith(".jpg"):
        print("Not a jpg file")
        return
    if quality < 0 or quality > 100:
        print("Quality should be between 0 and 100")
        return
    subprocess.call(["convert", file_path, "-quality", str(quality), file_path])

def main():
    """
    Main function
    """
    compress_jpg(sys.argv[1], int(sys.argv[2]))

if __name__ == "__main__":
    main()