map(...)    map(function, sequence[, sequence, ...]) -> list

>>> map(str, range(5))           #对range(5)各项进行str操作[‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘]        #返回列表>>> def add(n):return n+n... >>> map(add, range(5))           #对range(5)各项进行add操作[0, 2, 4, 6, 8]>>> map(lambda x:x+x,range(5))   #lambda 函数，各项+本身[0, 2, 4, 6, 8]
>>> map(lambda x:x+1,range(10))  #lambda 函数，各项+1
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> map(add,‘zhoujy‘)            [‘zz‘, ‘hh‘, ‘oo‘, ‘uu‘, ‘jj‘, ‘yy‘]#想要输入多个序列，需要支持多个参数的函数，注意的是各序列的长度必须一样，否则报错：>>> def add(x,y):return x+y... >>> map(add,‘zhoujy‘,‘Python‘)[‘zP‘, ‘hy‘, ‘ot‘, ‘uh‘, ‘jo‘, ‘yn‘]>>> def add(x,y,z):return x+y+z... >>> map(add,‘zhoujy‘,‘Python‘,‘test‘)     #‘test‘的长度比其他2个小Traceback (most recent call last):  File "<stdin>", line 1, in <module>TypeError: add() takes exactly 2 arguments (3 given)>>> map(add,‘zhoujy‘,‘Python‘,‘testop‘)[‘zPt‘, ‘hye‘, ‘ots‘, ‘uht‘, ‘joo‘, ‘ynp‘]

reduce(...)    reduce(function, sequence[, initial]) -> value

>>> def add(x,y):return x+y... >>> reduce(add,range(10))        #1+2+3+...+945>>> reduce(add,range(11))        #1+2+3+...+1055>>> reduce(lambda x,y:x*y,range(1,3),5)           #lambda 函数，5是初始值， 1*2*510>>> reduce(lambda x,y:x*y,range(1,6))             #阶乘，1*2*3*4*5120>>> reduce(lambda x,y:x*y,range(1,6),3)           #初始值3，结果再*3360
>>> reduce(lambda x,y:x+y,[1,2,3,4,5,6])          #1+2+3+4+5+6
21 

filter(...)    filter(function or None, sequence) -> list, tuple, or string

>>> def div(n):return n%2... >>> filter(div,range(5))                    #返回div输出的不等于0的真值[1, 3]>>> filter(div,range(10))[1, 3, 5, 7, 9]>>> filter(lambda x : x%2,range(10))        #lambda 函数返回奇数，返回列表[1, 3, 5, 7, 9]>>> filter(lambda x : not x%2,range(10))[0, 2, 4, 6, 8]>>> def fin(n):return n!=‘z‘                #过滤‘z‘ 函数，出现z则返回False... >>> filter(fin,‘zhoujy‘)                    #‘z‘被过滤‘houjy‘>>> filter(lambda x : x !=‘z‘,‘zhoujy‘)     #labmda返回True值‘houjy‘>>> filter(lambda x : not x==‘z‘,‘zhoujy‘)  #返回：字符串‘houjy‘

>>> a=lambda x:x+3>>> a(2)5>>> a=lambda x,y:x+y>>> a(2,3)5

#!/usr/bin/env python#-*- coding:utf-8 -*-def add_factorial(n):    empty_list=[]           #声明一个空列表，存各个阶乘的结果，方便这些结果相加    for i in map(lambda x:x+1,range(n)):    #用传进来的变量(n)来生成一个列表，用map让列表都+1，eg：range(5) => [1,2,3,4,5]        a=reduce(lambda x,y:x*y,map(lambda x:x+1,range(i)))   #生成阶乘，用map去掉列表中的0        empty_list.append(a)            #把阶乘结果append到空的列表中    return empty_listif __name__ == ‘__main__‘:    import sys#2选1#(一)    try:        n = input("Enter a Number(int) : ")        result=add_factorial(n)   #传入变量        print reduce(lambda x,y:x+y,result)      #阶乘结果相加    except (NameError,TypeError):        print "That‘s not a Number!"#(二)#    result = add_factorial(int(sys.argv[1]))   #传入变量#    print reduce(lambda x,y:x+y,result)      #阶乘结果相加

zhoujy@zhoujy:~/桌面/Python/4$ python factorial.pyEnter a Number(int) : 11zhoujy@zhoujy:~/桌面/Python/4$ python factorial.pyEnter a Number(int) : 23zhoujy@zhoujy:~/桌面/Python/4$ python factorial.pyEnter a Number(int) : 39zhoujy@zhoujy:~/桌面/Python/4$ python factorial.pyEnter a Number(int) : 433zhoujy@zhoujy:~/桌面/Python/4$ python factorial.pyEnter a Number(int) : 5153zhoujy@zhoujy:~/桌面/Python/4$ 

#!/usr/bin/env python#-*- coding:utf-8 -*-def is_prime(start,stop):    stop  = stop+1     #包含列表右边的值    prime = filter(lambda x : not [x%i for i in range(2,x) if x%i == 0],range(start,stop))   #取出质数,x从range(start,stop) 取的数    print primeif __name__ == ‘__main__‘:    try :        start = input("Enter a start Number :")    except :        start = 2   #开始值默认2    try :        stop  = input("Enter a stop  Number :")    except :        stop  = 0   #停止数，默认0，即不返回任何值    is_prime(start,stop)

zhoujy@zhoujy:~/桌面/Python/4$ python prime.py Enter a start Number :Enter a stop  Number :10[2, 3, 5, 7]zhoujy@zhoujy:~/桌面/Python/4$ python prime.py Enter a start Number :10Enter a stop  Number :20[11, 13, 17, 19]zhoujy@zhoujy:~/桌面/Python/4$ python prime.py Enter a start Number :Enter a stop  Number :[]