(self)
return (
            f'{self.date} -{self.before}{self.unit} +{self.after}{self.unit}')
A property that returns back the full interval.
A property that returns back the full interval.
A property that returns back the full interval .
def interval(self):
        """A property that returns back the full interval."""
        return (
            f'{self.date} -{self.before}{self.unit} +{self.after}{self.unit}')
def interval ( self ) : return ( f'{self.date} -{self.before}{self.unit} +{self.after}{self.unit}' )