[Tutor] Some questions about my yen-USD.py

[Alan Gauld]

> http://www.python.org/doc/current/lib/typesseq-strings.html
>
>>>> "%.*f" % (2, 2.234234)
> '2.23'

Cool! I'd never noticed this, or maybe just difdn't understand the 
significance.

And it works for multiple values too:

>>> "%*.*" % (12,3,123.456789)

unfortunately 3 values won't work, it only works for numbers...

>>> "%**.*" % ('-', 12,3,123.456789)

Error...

Alan G