Message195957
According to documentation of json.dump(), concerning its 'default' option:
default(obj) is a function that should return a serializable version of obj or raise TypeError. The default simply raises TypeError.
But this function is actually never applied to serialized dictionary keys:
>>> def default(obj):
... if isinstance(obj, bytes):
... return obj.decode('ascii')
... raise ValueError
...
>>> json.dumps(b'asdf')
Traceback (most recent call last):
...
TypeError: b'asdf' is not JSON serializable
>>> json.dumps(b'asdf', default=default)
'"asdf"'
>>> json.dumps({b'asdf' : 1}, default=default)
Traceback (most recent call last):
...
TypeError: keys must be a string
>>> json.dumps({1 : b'asdf'}, default=default)
'{"1": "asdf"}'
(bytes are used purely for the purpose of example)
Such behavior should be either documented or corrected.
Patch correcting python implementation of json attached. |
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Date |
User |
Action |
Args |
2013-08-23 10:30:30 | july | set | recipients:
+ july, docs@python |
2013-08-23 10:30:30 | july | set | messageid: <1377253830.03.0.463497944995.issue18820@psf.upfronthosting.co.za> |
2013-08-23 10:30:29 | july | link | issue18820 messages |
2013-08-23 10:30:29 | july | create | |
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