# send each member of range(5) sequence to p function which is simply printing it's argument def p(x): print x map(p,range(5)) #filter sequence for given condition seq=[2,22,22.2] z=filter(lambda x:x>2, seq) print z #take first two argument of sequence as x,y then apply x*y , take result of this as a new first argument take 3rd argument which is 3 here as a new second argument and continue to process till the end of sequence numbers=[1,2,3,4,5] print reduce(lambda x,y:x*y,numbers) here are the outputs of functions above 0 1 2 3 4 [22, 22.199999999999999] 120 -------------------------------------------------- Python Environment -------------------------------------------------- version = 2.5.4 (r254:67916, Dec 23 2008, 15:10:54) [MSC v.1310 32 bit (Intel)] platform = win32