Hi,

In the code you provided, company is a reference to the current company in the Odoo environment. In Odoo, you can have multiple companies configured within the same instance, and each company can have its own currency.

The company.currency_id field returns the default currency of the current company.

self.env.company is an Odoo environment object that provides access to the current company's data. You can use this object to access fields and methods related to the company.

To see the model and fields of the company object, you can follow these steps:

1. Go to the Odoo backend and open the "Settings" app.

2. Under the "Users & Companies" section, select the company -> choose a company to view the fields.

3. Click on the "debug icon" dropdown menu and select "view fields".

From here, you can see the fields of the res.company model, including currency_id.

Regards