①有1个变量时：
>>> lambda x : x if x % 2 else None②有2个变量时：
>>> f = lambda x,y = 3 : x * y >>> f(3) >>> 9 >>> f(4,6) >>> 24 >>> list(map(lambda x, y : [x, y], [1, 3, 5, 7, 9], [2, 4, 6, 8, 10])) >>> [[1, 2], [3, 4], [5, 6], [7, 8], [9, 10]]③求100 以内所有 3 的倍数
>>> [ i for i in range(1, 100) if not(i%3)] >>> [3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99] >>> list(filter(lambda n : not(n%3), range(1, 100))) >>> [3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99]