(self)
return f'{self.start_time},{self.end_time}'
Property that returns back the range.
Property that returns back the range.
Property that returns back the range .
def date_range(self):
        """Property that returns back the range."""
        return f'{self.start_time},{self.end_time}'
def date_range ( self ) : return f'{self.start_time},{self.end_time}'