Steven D'Aprano <[EMAIL PROTECTED]> writes: > def pmean(data): # Paul Rubin's mean > """Returns the arithmetic mean of data, unless data is all > ints, in which case returns the mean rounded to the nearest > integer less than the arithmetic mean.""" > s = sum(data) > if isinstance(s, int): return s//len(data) > else: return s/len(data)
Scheme and Common Lisp do automatic conversion and they thought out the semantics rather carefully, and I think both of them return exact rationals in this situation (int/int division). I agree with you that using // as above is pretty weird and it may be preferable to raise TypeError on any use of int/int (require either an explicit conversion, or use of //). -- http://mail.python.org/mailman/listinfo/python-list
