[issue24518] json.dumps should accept key function for ``sort_keys``

[Bob Ippolito]

Bob Ippolito added the comment:

On further investigation, simplejson has implemented this functionality under a different name since 2.5.0 (2012-03-29).

"""
If item_sort_key is a callable (not the default), then the output of dictionaries will be sorted with it. The callable will be used like this: sorted(dct.items(), key=item_sort_key). This option takes precedence over sort_keys.

Changed in version 2.5.0: item_sort_key is new in 2.5.0.
"""

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<http://bugs.python.org/issue24518>
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