python(filter, map, reduce, lambda)

1. filter

      str = ['a','b','c','d']
      def fun1(s): return s if s != 'a' else None
      ret = fileter(func,str)
      print ret

2. map

      str = ['a','d']
      def func2(s): return s + '.txt'
      ret = map(fun2,str)
      print ret

3. reduce

      def adda(x,y): return x + y
      print reduce(ass1,range(1,100))
      print reduce(ass1,100),20)

4. lambda

      g = lambda s: s + '.fsh'
      print g('haha')
      print (lambda x: x*2)(3)    

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!