@tetsu 代码中的说明,应该能看得懂吧: ~odoo.fields.One2many and ~odoo.fields.Many2many use a special "commands" format to manipulate the set of records stored in/associated with the field. This format is a list of triplets executed sequentially, where each triplet is a command to execute on the set of records. Not all commands apply in all situations. Possible commands are: (0, _, values) adds a new record created from the provided value dict. (1, id, values) updates an existing record of id id with the values in values. Can not be used in :meth:~.create. (2, id, _) removes the record of id id from the set, then deletes it (from the database). Can not be used in :meth:~.create. (3, id, _) removes the record of id id from the set, but does not delete it. Can not be used on ~odoo.fields.One2many. Can not be used in :meth:~.create. (4, id, _) adds an existing record of id id to the set. Can not be used on :class:~odoo.fields.One2many. (5, _, _) removes all records from the set, equivalent to using the command 3 on every record explicitly. Can not be used on :class:~odoo.fields.One2many. Can not be used in :meth:~.create. (6, _, ids) replaces all existing records in the set by the ids list, equivalent to using the command 5 followed by a command 4 for each id in ids. Note: Values marked as _ in the list above are ignored and can be anything, generally 0 or False.