bad-builtin-groupby (W8155)

itertools.groupby is used instead of odoo.tools.groupby.

What it does

Reports calls to itertools.groupby, also through from itertools import groupby and import aliases.

Why is this bad?

itertools.groupby only groups consecutive items, so unsorted records end up in several groups with the same key. odoo.tools.groupby groups all of them. See odoo/odoo#105376.