【python】sys

sys模块

sys.argv           命令行参数List，第一个元素是程序本身路径
sys.exit(n)        退出程序，正常退出时exit(0)
sys.version        获取Python解释程序的版本信息
sys.path           返回模块的搜索路径，初始化时使用PYTHONPATH环境变量的值
sys.platform       返回操作系统平台名称
sys.stdout.write('please:')

demo

import sys
print(sys.path)
print(sys.argv)

运行结果

D:\Python\Python35\python.exe D:/PycharmProjects/pythonOO/systest.py
['D:\\PycharmProjects\\pythonOO', 'D:\\Python\\Python35\\lib\\site-packages\\setuptools-18.3.1-py3.5.egg', 
'D:\\PycharmProjects\\pythonOO', 'D:\\Python\\Python35\\python35.zip', 'D:\\Python\\Python35\\DLLs', 
'D:\\Python\\Python35\\lib', 'D:\\Python\\Python35', 'D:\\Python\\Python35\\lib\\site-packages']
['D:/PycharmProjects/pythonOO/systest.py']

Process finished with exit code 0