def select_event_cb(self, attrname, old_val, new_val):
        print("select cb: %s <-- %s" % (attrname, str(new_val)))
        self.logger.info((attrname, str(new_val)) % "select cb: %s <-- %s")
dataset/ETHPy150Open ejeschke/ginga/ginga/web/bokehw/ImageViewBokeh.py/ImageViewEvent.select_event_cb/swapped operands of `%`