Hi Abir,

You can override the default write and create functions in order to add your own logic in.
An example for overriding the create:

    @api.model
    def create(self, values):
        """Override default Odoo create function and extend."""
        # Do your custom logic here
        return super(ResPartner, self).create(values)

An example for overriding the write:

    @api.multi
    def write(self, values):
        """Override default Odoo write function and extend."""
        # Do your custom logic here
        return super(ResPartner, self).write(values)

If you're talking about using .write or .create to create records you can do the following:

record = self.env['your.model'].create({
  'name': 'Example'
})

For a write:

record_ids = self.env['your.model'].search([('name', '=', 'Example')])
for record in record_ids:
    record.write({
        'some_field': 'some_description'
    })

Regards,
Yenthe