def set_eco(self, eco=True):   
        if not eco:
            try: 
                del self._data['eco']
            except __HOLE__:
                pass
        else:
            self._data['eco'] = 1
            
        return self
dataset/ETHPy150Open smsapi/smsapi-python-client/smsapi/actions/sms.py/SendAction.set_eco