sys module Review
sys.argv path is mainly used to display the program execution when the parameter is added in the back, Riga script commands, may be performed directly in front of the path
sys.version Python version information
sys.platform platform
When you do a search path environment variable sys.path program, usually append method to add paths
sys.stdin sys.stdout sys.stderror input and output, input with the alternative
OS module Review
os.getcwd current directory
os.chdir Change directory
os.curdir return to the current directory
os.mkdir build directory
os.rmdir delete directory
os.listdir directory listing
os.remove deleted files
os.rename renamed
os.stat file details
os.sep path separator
os.linesep each row delimiter
os.pathsep string path separator
os.name system name