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2 changes: 2 additions & 0 deletions ipykernel/jsonutil.py
Original file line number Diff line number Diff line change
Expand Up @@ -162,6 +162,8 @@ def json_clean(obj):
for k,v in iteritems(obj):
out[unicode_type(k)] = json_clean(v)
return out
if isinstance(obj, datetime):
return obj.strftime(ISO8601)

# we don't understand it, it's probably an unserializable object
raise ValueError("Can't clean for JSON: %r" % obj)
2 changes: 2 additions & 0 deletions ipykernel/tests/test_jsonutil.py
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@

import json
from base64 import decodestring
from datetime import datetime

import nose.tools as nt

Expand Down Expand Up @@ -37,6 +38,7 @@ def test():
((x for x in range(3)), [0, 1, 2]),
(iter([1, 2]), [1, 2]),
(Int(5), 5),
(datetime(1991, 7, 3, 12, 00), "1991-07-03T12:00:00.000000"),
]

for val, jval in pairs:
Expand Down