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explain json.dumps for non-string keys in dicts. closes issue6566. Patch contributed Kirubakaran Athmanathan

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Senthil Kumaran 2012-03-17 00:37:38 -07:00
parent bee24df3a7
commit e3d73544ad
1 changed files with 8 additions and 0 deletions
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Doc/library/json.rst
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@ -170,6 +170,14 @@ Basic Usage
:class:`unicode` instance. The other arguments have the same meaning as in
:func:`dump`.
.. note::
Keys in key/value pairs of JSON are always of the type :class:`str`. When
a dictionary is converted into JSON, all the keys of the dictionary are
coerced to strings. As a result of this, if a dictionary is convered
into JSON and then back into a dictionary, the dictionary may not equal
the original one. That is, ``loads(dumps(x)) != x`` if x has non-string
keys.
.. function:: load(fp[, encoding[, cls[, object_hook[, parse_float[, parse_int[, parse_constant[, object_pairs_hook[, **kw]]]]]]]])