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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 get_current_stats(self, names=None):
 """Return one or more of the current stats as a tuple. This function does no computation. It only returns what has already been calculated. If a stat hasn't been calculated, it will be returned as ``numpy.nan``. Parameters names : list of str, optional Specify the names of the stats to retrieve. If ``None`` (the default), will return ``default_stats``. Returns ------- tuple : The current values of the requested stats, as a tuple. The order of the stats is the same as the names. """

        if names is None:
            names = self.default_stats
        return self._current_stats.getstats(names)