def __ensure_setting(self, key, default_value):
        value = default_value
        if self.app_settings.has(key):
            value = self.app_settings.get(key)
            self.debug('Setting "%s" = %r' + (key, value))
        else:
            # no need to persist this setting - just use the default
            self.debug('Setting "%s" not found.  Using the default value of %r' % (key, default_value))
        return value
dataset/ETHPy150Open FichteFoll/FileHistory/file_history.py/FileHistory.__ensure_setting/operator `%` -> `+`