[Python-Dev] cpython (3.2): 3.2 explain json.dumps for non-string keys in dicts. closes issue6566. Patch (original) (raw)

Georg Brandl g.brandl at gmx.net
Sat Mar 17 17:46:42 CET 2012

On 03/17/2012 08:41 AM, senthil.kumaran wrote:

http://hg.python.org/cpython/rev/613919591a05 changeset: 75778:613919591a05 branch: 3.2 parent: 75771:32d3ecacdabf user: Senthil Kumaran <senthil at uthcode.com> date: Sat Mar 17 00:40:34 2012 -0700 summary: 3.2 explain json.dumps for non-string keys in dicts. closes issue6566. Patch contributed Kirubakaran Athmanathan

files: Doc/library/json.rst | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/Doc/library/json.rst b/Doc/library/json.rst --- a/Doc/library/json.rst +++ b/Doc/library/json.rst @@ -168,6 +168,14 @@ so trying to serialize multiple objects with repeated calls to :func:dump using the same fp will result in an invalid JSON file. + .. 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, cls=None, objecthook=None, parsefloat=None, parseint=None, parseconstant=None, objectpairshook=None, **kw)

This is just a minor nitpick, and it absolutely is not specific to you, Senthil: please try to keep the rst file structuring with newlines intact. In particular, I place two blank lines between top-level function/class descriptions because single blank lines already occur so often in rst markup.

When you add paragraphs, please try to keep the blank lines.

Georg

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