[issue16535] json encoder unable to handle decimal
Ralph Heinkel
report at bugs.python.org
Sun Jul 7 10:10:03 CEST 2013
Ralph Heinkel added the comment:
This patch was implemented on Europython 2013 sprint. It's my first addition to Python core ever so please bear with me if it's not perfect.
Decimal support is implemented both in the C and Python JSON code.
There is one peculiarity to mention about the Decimal addition in function _json.c:encoder_listencode_obj() of my patch:
The addition of
else if (PyObject_IsInstance(obj, (PyObject*)PyDecimalType)) {
PyObject *encoded = encoder_encode_decimal(s, obj);
if (encoded == NULL)
return -1;
return _steal_accumulate(acc, encoded);
}
was has to be located AFTER lists and dicts are handled in the JSON encoder, otherwise the unittest "test_highly_nested_objects_encoding()" from test_recursion.py fails with a nasty, unrecoverable Python exception.
My guess is that this is due additional stack allocation when the stack space is almost used up by the deeply nested recursion code.
----------
hgrepos: +202
keywords: +patch
nosy: +ralhei
Added file: http://bugs.python.org/file30836/json_decimal.patch
_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16535>
_______________________________________
More information about the Python-bugs-list
mailing list