#!/usr/bin/env python

 #filter(函数,可以迭代的对象)

 def f1(x):

     if x > 22:

         return True

     else:

         return False

 ret = filter(f1, [11,22,33,44])

 #相当于ret = filter(lambda x: x > 22,[11,22,33,44])

 for i in ret:

     print(i)

C:\Python35\python3.exe F:/Python/2day/c1.py

33

44

Process finished with exit code 0