import pickle

import json

import time

def to_json(python_object):

if isinstance(python_object, time.struct_time):

return {'__class__': 'time.asctime',

'__value__': time.asctime(python_object)}

if isinstance(python_object, bytes):

return {'__class__': 'bytes',

'__value__': list(python_object)}

raise TypeError

def from_json(json_object):

if '__class__' in json_object:

if json_object['__class__'] == 'time.asctime':

return time.strptime(json_object['__value__'])

if json_object['__class__'] == 'bytes':

return bytes(json_object['__value__'])

return json_object

if __name__ == '__main__':

entry = {}

entry['title'] = 'Dive into history, 2009 edition'

entry['article_link'] = 'http://diveintomark.org/archives/2009/03/27/dive-into-history-2009-edition'

entry['comments_link'] = None

entry['internal_id'] = b'\xDE\xD5\xB4\xF8'

entry['tags'] = ('diveintopython', 'docbook', 'html')

entry['published'] = True

entry['published_date'] = time.strptime('Fri Mar 27 22:20:42 2009')

with open('entry.pickle', 'wb') as f:

pickle.dump(entry, f)

with open('entry.pickle', 'rb') as f:

entry2 = pickle.load(f)

print(entry == entry2)

print(type(entry['tags']))

print(type(entry2['tags']))

with open('entry.json', 'w', encoding='utf-8') as f:

json.dump(entry, f, default=to_json)

with open('entry.json', 'r', encoding='utf-8') as f:

entry2 = json.load(f, object_hook=from_json)

print(entry == entry2)

print(type(entry['tags']))

print(type(entry2['tags']))