Python时间管理（time，datetime）

time模块

转换时间为时间元组

import time
s = '2019-01-01'
print(time.strptime(s, '%Y-%m-%d'))
s_time = '09:00:00'
print(time.strptime(s_time, '%H:%M:%S'))

元组类型时间

tuple_time = time.localtime()
print(tuple_time)

元组时间转换为字符串时间

print(time.strftime('%m-%d', tuple_time))
print(time.strftime('%Y-%m-%d', tuple_time))
print(time.strftime('%F', tuple_time))
print(time.strftime('%T', tuple_time))

时间戳类型转换为字符串时间

pwd_time = os.path.getctime('/home/kiosk/test')
pwd_time = os.path.getatime('/home/kiosk/test')
pwd_time = os.path.getmtime('/home/kiosk/test')
print(time.ctime(pwd_time))

将时间戳类型转换为元组

print(time.localtime(pwd_time))

元组转换为时间戳时间

tuple_time = time.localtime()
print(time.mktime(tuple_time))

datetime模块

导入

from datetime import datetime
from datetime import date
import os
from datetime import timedelta

现在的时间

print(date.today())
print(datetime.now())

几天前后

d = date.today()
delta = timedelta(days=3)
print(d+delta)
print(d-delta)

几个小时前后

d = datetime.now()
delta = timedelta(hours=3)
print(d+delta)
print(d-delta)

文件的修改时间

now_time = datetime.now()
pwd_time = os.path.getmtime('/etc/passwd')
pwd_time_obj = datetime.fromtimestamp(pwd_time)
delta = now_time - pwd_time_obj
print(delta)

系统运行时间（Linux—>uptime）

now_time = datetime.now()
boot_time = psutil.boot_time()
boot_time_obj = datetime.fromtimestamp(boot_time)
print(boot_time_obj)
delta_time = datetime.now()
dalta_time1 = now_time - boot_time_obj