L10n_ru/l10n_ru_doc/report/report_bill.py

from odoo import models
from odoo.addons.l10n_ru_doc.report_helper import QWebHelper

class RuBillReport(models.AbstractModel):
    _name = 'report.l10n_ru_doc.report_bill'

    def _get_report_values(self, docids, data=None):
        docs = self.env['account.move'].browse(docids)
        return {
            'helper': QWebHelper(),
            'doc_ids': docs.ids,
            'doc_model': 'account.move',
            'docs': docs
        }