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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_data(self, filename):
 """ Save the assimilated data to a file. Args: filename (str):
 filename to save the assimilated data to. Note that if the filename ends with gz or bz2, the relevant gzip or bz2 compression will be applied. """

        with zopen(filename, "wt") as f:
            json.dump(list(self._data), f, cls=MontyEncoder)