ローカルにあるdict形式のデータファイルをjson形式のデータファイルに変換

dict_to_json.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import ast
import glob
import json
import os


def dict_to_json(filename):

    new_file_name = '{}.new'.format(filename)

    if os.path.isfile(new_file_name):
        os.remove(new_file_name)

    with open(filename) as f:
        for line in f:
            # str to dict
            line_dict = ast.literal_eval(line)
            # dict to json
            line_json = json.dumps(line_dict)

            # add new file
            with open(new_file_name, 'a') as new_f:
                new_f.write('{}\n'.format(line_json))

    os.rename(new_file_name, filename)


def main():
    #file_list = os.listdir('.')
    file_list = glob.glob('./*.json')

    for file in file_list:
        print('{} start'.format(file))
        dict_to_json(file)


if __name__ == "__main__":
    main()