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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 from_df(cls, df_long, df_short):
 """ Builds TripleOrbitPopulation from DataFrame ``DataFrame`` objects must be of appropriate form to pass to :func:`OrbitPopulation.from_df`. :param df_long, df_short: :class:`pandas.DataFrame` objects to pass to :func:`OrbitPopulation.from_df`. """

        pop = cls(1,1,1,1,1) #dummy population
        pop.orbpop_long = OrbitPopulation.from_df(df_long)
        pop.orbpop_short = OrbitPopulation.from_df(df_short)
        return pop