Python中的sys模块

sys中的常用方法

实战

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# @Time     : 2021/8/21 21:16
# @Author   : InsaneLoafer
# @File     : package_sys.py

import sys

command = sys.argv[1]
if command == 'modules':
    modules = sys.modules
    print(modules)
elif command == 'path':
    path = sys.path
    print(path)
elif command == 'encoding':
    code = sys.getdefaultencoding()
    print(code)
elif command == 'platform':
    print(sys.platform)
elif command == 'version':
    print(sys.version)
else:
    print('not command')

• 在命令行中执行脚本

(venv) D:\My_Files\Python Project\pythonlean\python_package>python package_sys.py version
3.8.5 (tags/v3.8.5:580fbb0, Jul 20 2020, 15:57:54) [MSC v.1924 64 bit (AMD64)]

(venv) D:\My_Files\Python Project\pythonlean\python_package>python package_sys.py platform
win32