Python and Module--01sys

Sys

Module SYS gives you access to variables and functions that are closely related to the Python interpreter.

function/variable	Describe
Argv	command-line arguments, including the script name
Exit ([])	Exits the current program and can specify return values or error messages with optional parameters
Modules	A dictionary that maps the module name to the loaded module
Path	A list that contains the name of the directory in which to find the module
Platform	A platform identifier, such as SUNOS5 or Win32
Stdin	Standard input stream
StdOut	Standard output stream
StdErr	Standard error stream

sys.argv

Sys.argv[] is actually a list, inside the item is the user input parameters

#test. py
Import  sys

#打印test. pyzero = sys.argv[0]
Print Zero

#打印test the first parameter after the. PY  = sys.argv[1]print Primary

#打印含第二个参数之后所有
both = sys.argv[2:]
Print

The results are as follows:

$ python test.py a b c d e ftest.pya['b','C',' D ','e','f']

Python and Module--01sys