def put(self, key, value, format=None, append=False, **kwargs):
        if format is None:
            format = get_option("io.hdf.default_format") or 'fixed'
        kwargs = self._validate_format(format, kwargs)
        self._write_to_group(key, value, append=append, **kwargs)
Store object in HDFStore
dataset/ETHPy150Open pydata/pandas/pandas/io/pytables.py/HDFStore.put