When running the following:

>> json.dump(['name': "港区"], myfile.json, indent=4, separators=(',', ': '), ensure_ascii=False)

the function escapes the unicode, even though I have explicitly asked to not force to ascii:
\u6E2F\u533A

By changing "__init__.py" such that the fp.write call encodes the text as utf-8, the output json file displays the human-readable text required (see below).


OLD (starting line 167):

if (not skipkeys and ensure_ascii and
        check_circular and allow_nan and
        cls is None and indent is None and separators is None and
        encoding == 'utf-8' and default is None and not kw):
        iterable = _default_encoder.iterencode(obj)
    else:
        if cls is None:
            cls = JSONEncoder
        iterable = cls(skipkeys=skipkeys, ensure_ascii=ensure_ascii,
            check_circular=check_circular, allow_nan=allow_nan, indent=indent,
            separators=separators, encoding=encoding,
            default=default, **kw).iterencode(obj)
for chunk in iterable:
    fp.write(chunk)


NEW:

if (not skipkeys and ensure_ascii and
        check_circular and allow_nan and
        cls is None and indent is None and separators is None and
        encoding == 'utf-8' and default is None and not kw):
        iterable = _default_encoder.iterencode(obj)
        for chunk in iterable:
            fp.write(chunk)
    else:
        if cls is None:
            cls = JSONEncoder
        iterable = cls(skipkeys=skipkeys, ensure_ascii=ensure_ascii,
            check_circular=check_circular, allow_nan=allow_nan, indent=indent,
            separators=separators, encoding=encoding,
            default=default, **kw).iterencode(obj)
        for chunk in iterable:
            fp.write(chunk.encode('utf-8'))