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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def save(matrix, version, out, kind=None, **kw):
 """\ Serializes the matrix in any of the supported formats. :param matrix: The matrix to serialize. :param int version: The (Micro) QR code version :param out: A filename or a writable file-like object with a ``name`` attribute. If a stream like :py:class:`io.ByteIO` or :py:class:`io.StringIO` object without a ``name`` attribute is provided, use the `kind` parameter to specify the serialization format. :param kind: If the desired output format cannot be extracted from the filename, this parameter can be used to indicate the serialization format (i.e. "svg" to enforce SVG output) :param kw: Any of the supported keywords by the specific serialization method. """

    is_stream = False
    if kind is None:
        try:
            fname = out.name
            is_stream = True
        except AttributeError:
            fname = out
        ext = fname[fname.rfind('.') + 1:].lower()
    else:
        ext = kind.lower()
    if not is_stream and ext == 'svgz':
        f = gzip.open(out, 'wb', compresslevel=kw.pop('compresslevel', 9))
        try:
            _VALID_SERIALISERS['svg'](matrix, version, f, **kw)
        finally:
            f.close()
    else:
        if kw.pop('debug', False) and ext == 'svg':
            ext = 'svg_debug'
        try:
            _VALID_SERIALISERS[ext](matrix, version, out, **kw)
        except KeyError:
            raise ValueError('Unknown file extension ".{0}"'.format(ext))