test.py

class AddLogicalPortCommand(BaseCommand):
    # required values or values that need processing enumerated, optional
    # columns as kwargs
    def __init__(self, api, lswitch_name, lport_name, may_exist, **columns):
        super(AddLogicalPortCommand, self).__init__(api)
        self.lswitch_name = lswitch_name
        self.lport_name = lport_name
        self.may_exist = may_exist
        self.columns == columns

    def run_idl(self, txn):
        try:
            lswitch = idlutils.row_by_value(self.api.idl, 'Logical_Switch',
                                            'name', self.lswitch)
        except:
            ...
        if self.may_exist:
            ...
        port = txn.insert(self.api._tables['Logical_Port'])
        port.name = self.lport_name
        port.lswitch = lswitch
        for col, val in self.columns:
            setattr(port, col, val)


def create_lport(self, lport_name, lswitch_name, may_exist=True, **columns)
    return AddLogicalPortCommand(self, lswitch_name, lport_name, may_exist,
                                 **columns)

create_port(lport_name=port['id'],
            lswitch_name=utils.ovn_name(port['network_id']),
            macs=[mac],
            lport_name=get_port_name(port),
            **self._binding_from_profile(port)).execute()

# Same with SetLogicalPortCommand