Hello all,

i'm pretty new in Odoo and i don't know which Python files to create for changes in the report invoice document. I simple want to extend the report invoice document and the only one i know to create is the xml document.

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <template id="heinzmann_report_invoice_document" inherit_id="account.report_invoice_document">
       <xpath expr="//div[hasclass('page')]/div[@id='informations']" position="after">
...

But i don't know what to write in the Python files.

Here my Python files:

heinzmann_account -> __init__.py

from . import account_account

heinzmann_account -> models -> account.py

from odoo import models, fields, api, _

class Account(models.Model):
    _name = "account.account"
    _inherit = "account.account"

Can anyone help me and maybe describe why?