Description of the issue/feature this PR addresses:
The Tax ID field is validating NOxxxxxxxxx as format, but the format is actually NOxxxxxxxxxMVA if you are in the VAT registrty.
Current behavior before PR:
Valid tax numbers for Norway are rejected.
Desired behavior after PR is merged:
The format NOxxxxxxxxxMVA is accepted, along with the old behaviour of NOxxxxxxxxx.
In Python 3:
* various builtins and dict methods were changed to return
view/iterable objects rather than lists
* and the separate Python 2 view/iterable builtins and methods were
removed altogether
This is problematic when using these items as list (which the happens
repeatedly in Odoo), but more viciously when iterating *multiple times*
over them (which also happens, which I've messed up multiple times while
writing this, and which is a pain to debug even when you've just created
the issue).
Convert all code using these to semantics-matching cross-version
helper functions to get the LCD behaviour between P2 and P3, and
forbid the builtins via lint.
issue #8530
dip-odoo