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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 _decode(self, value):
 """Decode bytes to UTF-8 strings as a singe value, list, or dict. :param mixed value: The value to decode :rtype: mixed """

        if isinstance(value, list):
            return [self._decode(v) for v in value]
        elif isinstance(value, dict):
            return {self._decode(k): self._decode(v)
                    for k, v in value.items()}
        elif isinstance(value, bytes):
            return value.decode('utf-8')
        return value