python as lambda fiter的使用

'''Created on 2013-7-25@author: tdolyuse filter() and other method'''from random import randintfrom random import randint as ridef odd(n):    return n % 2def former():    allNums = []    for eachNum in range(9):        allNums.append(randint(1, 99))    print filter(odd, allNums)def refactoring1():    allNums = []    for eachNum in range(9):        allNums.append(randint(1, 99))    print filter(lambda n : n%2, allNums)    def refactoring2():    allNums = []    for eachNum in range(9):        allNums.append(randint(1, 99))    print [n for n in allNums if n%2]def refactoring3():    print [n for n in [ri(1, 99) for eachNum in range(9)] if n%2]if __name__ == '__main__':    former()    refactoring1()    refactoring2()    refactoring3()    

参考结果：（运行会不一样）[49, 89, 17, 75, 59][55, 79, 87, 71, 67, 9][25, 15, 65, 99][21, 29, 71, 87, 73, 31]