Chapter 6 

6.5.2

In [1]: min('A3')
Out[1]: '3'

In [2]: min('AC')
Out[2]: 'A'

enumerate

In [3]: s ="foobar"
In [4]: for i, t in enumerate(s):
   ...:     print i, t
   ...:     
0 f
1 o
2 o
3 b
4 a
5 r

zip 

In [5]: s, t = 'foa', 'obr'
In [6]: zip(s,t)
Out[6]: [('f', 'o'), ('o', 'b'), ('a', 'r')]


6.5.3 字符串类型函数

In [6]: pyinput= raw_input("enter ")
enter evan

In [7]: pyinput
Out[7]: 'evan'
#py里面没有C风格的结束字符nul ,你输入多少个字符，len 就返回的就是多少
In [8]: len(pyinput)
Out[8]: 4

str() and unicode()
这两个是工厂函数，就是说产生所对应的类型的对象。

p120-121


Python核心编程第9章练习题9.4
http://gunner.me/archives/851