def _format()

in logger.py [0:0]


    def _format(self, key, value, ty):
        if ty == 'int':
            value = int(value)
            return f'{key}: {value}'
        elif ty == 'float':
            return f'{key}: {value:.04f}'
        elif ty == 'time':
            value = str(datetime.timedelta(seconds=int(value)))
            return f'{key}: {value}'
        else:
            raise f'invalid format type: {ty}'