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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 transform(self, maps):
 """ This function transforms from aligned mass-weighted spins to cartesian spins aligned along the z-axis. Parameters maps : a mapping object Returns ------- out : dict A dict with key as parameter name and value as numpy.array or float of transformed values. """

        mass1 = maps[parameters.mass1]
        mass2 = maps[parameters.mass2]
        out = {}
        out[parameters.spin1z] = \
                         conversions.spin1z_from_mass1_mass2_chi_eff_chi_a(
                               mass1, mass2,
                               maps[parameters.chi_eff], maps["chi_a"])
        out[parameters.spin2z] = \
                         conversions.spin2z_from_mass1_mass2_chi_eff_chi_a(
                               mass1, mass2,
                               maps[parameters.chi_eff], maps["chi_a"])
        return self.format_output(maps, out)