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        ],
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        "lineno": 1,
        "name": "formula"
      },
      "file_path": "openfisca_france/model/prelevements_obligatoires/impot_revenu/ir.py",
      "source_code": "def formula(individu, period, parameters):\n    # If age_en_mois is known at the same day of another month, compute the new age_en_mois from it.\n    holder = individu.get_holder('age_en_mois')\n    start = period.start\n    known_periods = holder.get_known_periods()\n\n    for last_period in sorted(known_periods, reverse = True):\n        last_start = last_period.start\n        if last_start.day == start.day:\n            last_array = holder.get_array(last_period)\n            return last_array + ((start.year - last_start.year) * 12 + (start.month - last_start.month))\n\n    has_birth = individu.get_holder('date_naissance').get_known_periods()\n    if not has_birth:\n        has_age = bool(individu.get_holder('age').get_known_periods())\n        if has_age:\n            return individu('age', period) * 12\n    date_naissance = individu('date_naissance', period)\n    epsilon = timedelta64(1)\n    return (datetime64(period.start) - date_naissance + epsilon).astype('timedelta64[M]')\n",
      "start_line_number": 105,
      "stop_line_number": 125,
      "variables": [
        "age",
        "date_naissance"
      ]
    }
  },
  "is_period_size_independent": true,
  "json_type": "integer",
  "label": "Âge (en mois)",
  "name": "age_en_mois",
  "referring_variables": [
    "age",
    "api",
    "ars",
    "ass_eligibilite_individu",
    "cmu_c_plafond",
    "enceinte_fam",
    "paje_clca",
    "paje_colca"
  ],
  "set_input": "set_input_dispatch_by_period",
  "start_line_number": 95,
  "stop_line_number": 125,
  "unit": "months",
  "value_type": "int"
}
