Convert files to utf-8 encoding

toutf8.py

import argparse
import logging
import os


def convert():
    parser = argparse.ArgumentParser(description='Convert files in folders charset to utf-8')
    parser.add_argument('path', help='folder path')
    parser.add_argument('-s', nargs='?', default='GBK', help='source encoding')

    args = parser.parse_args()
    path = args.path
    if os.path.isdir(path):
        for root, dirs, files in os.walk(path, topdown=True):
            for f in files:
                sub_path = os.path.join(root, f)
                src_file = open(sub_path, 'rb')
                src = unicode(src_file.read(), 'GBK')
                src_file.close()
                dest_file = open(sub_path, 'w')
                dest_file.write(src.encode('utf-8'))
                dest_file.close()

    else:
        logging.error('%s is not a directory.')


if __name__ == "__main__":
    logging.basicConfig(level=logging.INFO)
    convert()