Python-sys Module

Sys

ARGV[1] #1. PY implements passing parameters from outside the program to the program

Sys.exit ([arg]) #程序中间的退出, arg=0 for normal exit
Sys.getdefaultencoding () #获取系统当前编码, which is generally ASCII by default.
Sys.path #功能: Gets a collection of strings for the specified module search path, which can be placed in a given path, and can be found correctly when import is in the program.
Sys.platform #获取当前执行环境的平台, such as Win32 that is the Windows 32bit operating system, LINUX2 is the Linux platform;

ARGV can still play like that.

Import SYS def h ():     Print "  This is help "  = sys.argv[1]if"-H":    h ()

Python-sys Module