account-financial-tools/account_move_fiscal_year/models/res_company.py

# Author: Damien Crier
# Copyright 2016 Camptocamp SA
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
from odoo import models


class ResCompany(models.Model):
    _inherit = "res.company"

    def find_daterange_fy(self, date):
        """
        try to find a date range with type 'fiscalyear'
        with @param:date contained in its date_start/date_end interval
        """
        fiscalyear = self.env["account.fiscal.year"].search(
            [
                ("company_id", "=", self.id),
                ("date_from", "<=", date),
                ("date_to", ">=", date),
            ],
            limit=1,
        )

        return fiscalyear