python三种方法获取系统时间

import time

print(time.time())

1586813438.419919

print(time.ctime())

Mon Apr 13 23:30:38 2020

import datetime

print(datetime.datetime.now())

2021-11-13 23:30:38.419951

print(datetime.date.today())

2021-11-13

import os

os.system('date')

Sun Feb 20 10:12:36 UTC 2022

os.system('date +"%Y-%m-%d %H:%M:%S"')

2022-02-20 10:30:09