Impacted versions:10

Steps to reproduce:
Following the code in https://www.odoo.com/documentation/10.0/api_integration.html both in a fresh install and against 'https://demo.odoo.com/start' trows a type error

Current behavior:
Now I get an error when executing:

```
ids = models.execute_kw(db, uid, password,  'res.partner', 'search',
    [[['is_company', '=', True], ['customer', '=', True]]],
    {'limit': 1})
[record] = models.execute_kw(db, uid, password,
    'res.partner', 'read', [ids])
# count the number of fields fetched by default
len(record)
```

In particular it seems to be a type error (cannot marshal class odoo.tools.float_utils.float_precision)

Expected behavior:
I would expect it to behave as in the documentation

super(One2many, self).__init__(
            comodel_name=comodel_name,
            inverse_name=inverse_name,
            string=string,
            **kwargs
        )
    def _setup_regular_full(self, model):
        super(One2many, self)._setup_regular_full(model)
        if self.inverse_name:
            
            comodel = model.env[self.comodel_name]
            invf = comodel._fields[self.inverse_name]
            
            
            
            if isinstance(invf, Many2one):
                model._field_inverses.add(self, invf)
                comodel._field_inverses.add(invf, self)
    _description_relation_field = property(attrgetter('inverse_name'))
    _column_fields_id = property(attrgetter('inverse_name'))
    _column_auto_join = property(attrgetter('auto_join'))
    _column_limit = property(attrgetter('limit'))
    def convert_to_onchange(self, value, record, fnames=()):
        if fnames:
            
            fnames = [name for name in fnames if name != self.inverse_name]
        return super(One2many, self).convert_to_onchange(value, record, fnames)
class Many2many(_RelationalMulti):