> def fact(x): > if x == 0 or x == 1: > return 1 > else: > return reduce(operator.mul, xrange(1,x+1))
If obscurity is the name of the game, >>> from operator import mul >>> fact = lambda i: i > 1 and reduce(mul, xrange(1,i+1)) or i >= 0 and 1 or None >>> for i in xrange(-2,10): print '%i! = %s' % (i, fact(i)) My eyes hurt after reading that...as the order of operations is left to Python to discern (a few judiciously placed parens might improve things...though that may be like polishing coprolite) I haven't yet seen an implementation in C (using the python/C interface) or anybody handing off a python AST/opcode-list to an appropriate function :) -tkc -- http://mail.python.org/mailman/listinfo/python-list
