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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(repr(python_object) + ' is not JSON serializable')
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']))
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