old_contents: # -*- coding: utf-8 -*-
  from odoo import models, fields
  
  
  class Partner(models.Model):
      _inherit = "res.partner"
  
      passport = fields.Char(
          compute=lambda s: s._compute_identification(
              'passport', 'passport',
          ),
          inverse=lambda s: s._inverse_identification(
              'passport', 'passport',
          ),
          search=lambda s, *a: s._search_identification(
              'passport', *a
          ),
      )
  
new_contents: # -*- coding: utf-8 -*-
  from odoo import models, fields
  
  
  class Partner(models.Model):
      _inherit = "res.partner"
  
      passport = fields.Char(
          string='Passport Number',
          compute=lambda s: s._compute_identification(
              'passport', 'passport',
          ),
          inverse=lambda s: s._inverse_identification(
              'passport', 'passport',
          ),
          search=lambda s, *a: s._search_identification(
              'passport', *a
          ),
      )
  
subject: rename field Passport to Passport Number