DoDaek

Implement string format method

4

## python ``` >>> a = 'alpha' >>> b = 'bravo' >>> d = 'delta' >>> origin = '{} {} charlie {}' >>> new = origin.format(a, b, d) >>> print(new)...

Implement float is_integer method

1

## python ``` >>> a = 10.0 >>> type(a) >>> a.is_integer() True ``` ## gpython ``` >>> a = 10.0 >>> type(a) >>> a.is_integer() Traceback (most recent call last): File...