from functools import reduce
def toplama(x,y): return x + y
reduce(toplama,[12,18,20,10])
reduce(lambda x,y : x * y,[1,2,3,4,5])
def maksimum(x,y): if (x > y): return x else: return y
maksimum(3,4)
reduce(maksimum,[-2,3,1,4])