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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 to_feather(self, fname):
 """ Write out the binary feather-format for DataFrames. .. versionadded:: 0.20.0 Parameters fname : str string file path """

        from pandas.io.feather_format import to_feather
        to_feather(self, fname)