python编程:任意输入4个正整数,编程24点答:n = raw_input('input 4 number sep by comma: 1,2,3,4 -> ')t = list(itertools.permutations(n.split(','),4))x = list(itertools.product(* (['+', '-', '*', '/'],) * 3))for r in t:for i in x:if eval(("(((%s%s%s)%s%s)%s%s)") % (r[0],i[0],...