How to overcome “datetime.datetime not JSON serializable”?

Question

I have a basic dict as follows:

sample = {}
sample[\'title\'] = \"String\"
sample[\'somedate\'] = somedatetimehere
         


        

Answer 1

My solution (with less verbosity, I think):

def default(o):
    if type(o) is datetime.date or type(o) is datetime.datetime:
        return o.isoformat()

def jsondumps(o):
    return json.dumps(o, default=default)

Then use jsondumps instead of json.dumps. It will print:

>>> jsondumps({'today': datetime.date.today()})
'{"today": "2013-07-30"}'

I you want, later you can add other special cases to this with a simple twist of the default method. Example:

def default(o):
    if type(o) is datetime.date or type(o) is datetime.datetime:
        return o.isoformat()
    if type(o) is decimal.Decimal:
        return float(o)