human
I am working on the file "2014-12-19-sprint-revenu-de-base/reforme_des_cotisations_avec_revenu_de_base.ipynb".
The first task is:
Réforme
Can you write Python program for it?

What is a the Python program you requested?
assistant
#Here is the Python program you requested.

from openfisca_core import reforms

Reform = reforms.make_reform(
    key = 'cotisations_revenu_de_base',
    name = u"Réforme des cotisations pour un Revenu de base",
    reference = tax_benefit_system,
    )

@Reform.formula
class cotisations_contributives(SimpleFormulaColumn):
    column = FloatCol
    entity_class = Individus
    label = u"Nouvelles cotisations contributives"

    def function(self, simulation, period):
        ags = simulation.calculate('ags', period)
        agff_tranche_a_employeur = simulation.calculate('agff_tranche_a_employeur', period)
        apec_employeur = simulation.calculate('apec_employeur', period)
        arrco_tranche_a_employeur = simulation.calculate('arrco_tranche_a_employeur', period)
        assedic_employeur = simulation.calculate('assedic_employeur', period)
        cotisation_exceptionnelle_temporaire_employeur = simulation.calculate('cotisation_exceptionnelle_temporaire_employeur', period)
        fonds_emploi_hospitalier = simulation.calculate('fonds_emploi_hospitalier', period)
        ircantec_employeur = simulation.calculate('ircantec_employeur', period)
        pension_civile_employeur = simulation.calculate('pension_civile_employeur', period)
        prevoyance_obligatoire_cadre = simulation.calculate('prevoyance_obligatoire_cadre', period)
        rafp_employeur = simulation.calculate('rafp_employeur', period)
        vieillesse_deplafonnee_employeur = simulation.calculate('vieillesse_deplafonnee_employeur', period)
        vieillesse_plafonnee_employeur = simulation.calculate('vieillesse_plafonnee_employeur', period)
        allocations_temporaires_invalidite = simulation.calculate('allocations_temporaires_invalidite', period)
        accident_du_travail = simulation.calculate('accident_du_travail', period)
        agff_tranche_a_employe = simulation.calculate('agff_tranche_a_employe', period)
        agirc_tranche_b_employe = simulation.calculate('agirc_tranche_b_employe', period)
        apec_employe = simulation.calculate('apec_employe', period)
     ...