http://blog.chinaunix.net/u2/84280/showart_1793926.html
http://www.ibm.com/developerworks/cn/linux/l-pyint/index1.html
数据结构
列表
a = ['1', 'cnbird', 'fuckyou']
取得值a[0]
元组
('wolf', 'elephant', 'penguin')
字典
{
'key' : 'value',
'key1': 'value'
}
键值的关系
序列 切片
shoplist[1:3]返回从位置1开始，包括位置2，但是停止在位置3的一个序列切片，因此返回一个含有两个项目的切片。
startwith方法是用来测试字符串是否以给定字符串开始。in操作符用来检验一个给定字符串是否为另一个字符串的一部分。
find方法用来找出给定字符串在另一个字符串中的位置，或者返回-1以表示找不到子字符串。str类也有以一个作为分隔符的字符串join序列的项目的整洁的方法，它返回一个生成的大字符串。
时间函数：
time.strftime(format[, t])
| Directive | Meaning | Notes |
|---|---|---|
| %a | Locale’s abbreviated weekday name. | |
| %A | Locale’s full weekday name. | |
| %b | Locale’s abbreviated month name. | |
| %B | Locale’s full month name. | |
| %c | Locale’s appropriate date and time representation. | |
| %d | Day of the month as a decimal number [01,31]. | |
| %H | Hour (24-hour clock) as a decimal number [00,23]. | |
| %I | Hour (12-hour clock) as a decimal number [01,12]. | |
| %j | Day of the year as a decimal number [001,366]. | |
| %m | Month as a decimal number [01,12]. | |
| %M | Minute as a decimal number [00,59]. | |
| %p | Locale’s equivalent of either AM or PM. | (1) |
| %S | Second as a decimal number [00,61]. | (2) |
| %U | Week number of the year (Sunday as the first day of the week) as a decimal number [00,53]. All days in a new year preceding the first Sunday are considered to be in week 0. | (3) |
| %w | Weekday as a decimal number [0(Sunday),6]. | |
| %W | Week number of the year (Monday as the first day of the week) as a decimal number [00,53]. All days in a new year preceding the first Monday are considered to be in week 0. | (3) |
| %x | Locale’s appropriate date representation. | |
| %X | Locale’s appropriate time representation. | |
| %y | Year without century as a decimal number [00,99]. | |
| %Y | Year with century as a decimal number. | |
| %Z | Time zone name (no characters if no time zone exists). | |
| %% | A literal '%' character. |
http://docs.python.org/library/time.html
Python pty
使用平台IRIX,Linux
冒充终端模块
此模块包括了三个函数
Pty模块定义操控冒充终端概念的具体实现，开启另外一个进程同时对于来自终端控制台进行写和读。
有下面三个函数
pty.fork()
fork作为伪终端连接到子进程的控制终端.返回值是(pid, fd).注意这个子进程的pid如果是0那么fd失效。父进程返回了子进程的pid值，同时fd是一个连接到子进程控制终端的文件描述符。
pty.openpty()
使用pty.openpty开一个新的伪终端。返回值是相同的文件描述符(master, slave)
pty.spawn(argv[,master_read[,stdin_read]])
产生一个新的进程同时作为当前进程标准IO连接到它的控制终端。这个经常被用作必须要求读控制终端的程序。例如SSH等
master_read和stdin_read函数是从文件描述符中读，当它被调用的时候默认是尝试读取1024字节。
