[docs] [issue18820] json.dump() ignores its 'default' option when serializing dictionary keys

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

See also

https://github.com/simplejson/simplejson/issues/42
https://github.com/simplejson/simplejson/issues/100
https://github.com/simplejson/simplejson/issues/103

And allowing non-string keys leads to other issue:

https://github.com/simplejson/simplejson/issues/77

Thus there is an argument for disallowing serializing non-string keys.

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nosy: +bob.ippolito, serhiy.storchaka

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