On Mar 24, 11:05 am, gchuyun <gchu...@gmail.com> wrote:
> i tried this, but get a error similar.
>
> TypeError: [{'publish_time': datetime.datetime(2009, 3, 24, 16, 16,
> 18), 'is_deleted': 0, 'is_confirmed'
> : 0, 'title': u'1', 'content': u'111', 'id': 1L}, {'publish_time':
> datetime.datetime(2009, 3, 24, 16
> , 27, 50), 'is_deleted': 0, 'is_confirmed': 0, 'title': u'12',
> 'content': u'22', 'id': 2L}, {'publish_time'
> : datetime.datetime(2009, 3, 24, 16, 28, 50), 'is_deleted': 0,
> 'is_confirmed': 0, 'title': u'ssssssss'
> , 'content': u'dddddddddddddddd', 'id': 3L}] is not JSON serializable
>
The real problem is not a list of dictionaries structure but datetime
field. Check this out:
CODE:
my_list = [
{'publish_time': datetime.datetime(2009, 3, 24, 16, 16,18),
'is_deleted': 0, 'is_confirmed': 0, 'title': u'1', 'content': u'111',
'id': 1L},
{'publish_time': datetime.datetime(2009, 3, 24, 16, 27, 50),
'is_deleted': 0, 'is_confirmed': 0, 'title': u'12', 'content': u'22',
'id': 2L},
{'publish_time': datetime.datetime(2009, 3, 24, 16, 28, 50),
'is_deleted': 0,'is_confirmed': 0, 'title': u'ssssssss', 'content':
u'dddddddddddddddd', 'id': 3L}
]
print simplejson.dumps(my_list)
OUTPUT:
...
TypeError: datetime.datetime(2009, 3, 24, 16, 16, 18) is not JSON
serializable
So to solve this problem you may represent datatime fields as strings:
def make_it_json_friendly(element):
element['publish_time'] = str(element['publish_time'])
return element
my_list = map(make_it_json_friendly, my_list)
print simplejson.dumps(my_list)
I hope this will help.
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