[docs] [issue13769] json.dump(ensure_ascii=False) return str instead of unicode

Aug. 27, 2012


      Petri Lehtinen added the comment:

It seems to me that when ensure_ascii is False, the return value will be a unicode instance if and only if there's a unicode object anywhere in the input.
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json.dumps({'foo': 'bar'}, ensure_ascii=False)
'{"foo": "bar"}'
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json.dumps({'foo': u'bar'}, ensure_ascii=False)
u'{"foo": "bar"}'
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json.dumps({'foo': u'äiti'}, ensure_ascii=False)
u'{"foo": "\xe4iti"}'
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json.dumps({'foo': u'äiti'.encode('utf-8')}, ensure_ascii=False)
'{"foo": "\xc3\xa4iti"}'
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json.dumps({'foo': u'äiti'.encode('utf-16')}, ensure_ascii=False)
'{"foo": "\xff\xfe\xe4\\u0000i\\u0000t\\u0000i\\u0000"}'
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nosy: +petri.lehtinen

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<http://bugs.python.org/issue13769>
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