sys和hashlib模块

#_author:"ai_XZP_master"
#date: 2018/2/11
#Python解释器进行交互

import sys

# print(sys.argv)
#
# def post():
#     print('ok')
#
# def download():
#     pass
# if sys.argv[1]=='post':
#     post()
#
# elif sys.argv[1]=='download':
#     download()

import time
# print(sys.path.append())
# print(sys.platform)#返回操作系统平台名称

import os

if sys.platform=='win32':
    os.system('dir')
else:
    os.system('ls')

#_author:"ai_XZP_master"
#date: 2018/2/12

#加密模块
import hashlib

# m=hashlib.md5()
# print(m)
#
# m.update('hello world'.encode('utf8'))
# print(m.hexdigest())
# m.update('alex'.encode('utf8'))
#
# m2=hashlib.md5()
# m2.update('hello world'.encode('utf8'))
# print(m2.hexdigest())

# s=hashlib.sha256()#常用256
# s.update('hello world'.encode('utf8'))
# print(s.hexdigest())