>>> x = [0,1,2,3,4]

>>> for i in x:

    print i,

0 1 2 3 4

>>> x = 'python'

>>> for i in x:

    print i,

p y t h o n

>>> x = [('http','https'),('java','python')]

>>> for (a,b) in x:

    print (a,b)

('http', 'https')

('java', 'python')

# 文件迭代器，读取文件的最佳实践

>>> for line in open('test.txt'):

    print line.upper()

HELLO,WORD!

# 字典迭代器

>>> testDict = {'name':'ethon','aender':'male'}

>>> for key in testDict:

    print key + ':' + testDict[key]

aender:male

name:ethon

>>> testList = [9,8,7,6,5]

>>> print sorted(testList)

[5, 6, 7, 8, 9]

>>> print sum(testList)

35

>>> print any(testList)

True

>>> print list(open('test.txt'))

['Hello,word!']

>>> print tuple(open('test.txt'))

('Hello,word!',)

# 元组、列表的构造函数以及join都可以对支持迭代协议的对象操作

>>> print ('--').join(open('test.txt'))

Hello,word!

>>> for i in range(5):

    print str(i)+ 'is the current value'

0 is the current value

1 is the current value

2 is the current value

3 is the current value

4 is the current value

>>> L1 = [1,3,5,7]

>>> L2 = [2,4,6,8]

>>> print zip(L1,L2)

[(1, 2), (3, 4), (5, 6), (7, 8)]

>>> for (a,b) in  zip(L1,L2):

    print (a,b)

(1, 2)

(3, 4)

(5, 6)

(7, 8)

ns = int(raw_input("How many lines of starts do you want? "))

st = int(raw_input("How many start do you want? "))

for line in range(0,ns): # 外循环

    for star in range(0,st): # 内循环

        print "*",

    print

-------------------------------------------
How many lines of starts do you want? 3
How many start do you want? 5
* * * * *
* * * * *
* * * * *