Python入门之时间模块、datetime模块、difflib文件对比模块、sys模块

悠悠 2021-12-13 04:04 699阅读 0赞

一.时间模块

导入：import time

s = '2019-7-14'
    print(time.strptime(s,'%Y-%m-%d'))
    s_time = '09:00:00'
    print(time.strptime(s_time,'%H:%M:%S'))

![20190715190154915.png][]

1.把元组的时间转换为时间戳

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

![201907151902544.png][]

2.把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))

![20190715190545664.png][]

3.把时间戳转换为字符串时间

pwd_time = os.path.getctime('/etc/passwd')
    print('pwd_time',pwd_time)
    print(time.ctime(pwd_time))

![20190715190829721.png][]

4.把时间戳转换为元组

print(time.localtime(pwd_time))

![2019071519104871.png][]

5.元组转换为时间戳

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

![20190715191127381.png][]

二.datetime 模块

导入：import os  
from datetime import date  
from datetime import datetime  
from datetime import timedelta

1.计算几天前后的时间

timedalta

2.计算几个小时前后的时间

now\_time = datetime.now()

delta = timedelta(hours = 2)

print(now\_time + delta)

print(now\_time - delta)

3.计算时间差

now\_time = datetime.now()

pwd\_time = os.path.getmtime

练习1 需求：

1.获取当前主机时间（操作系统名 主机名 内核版本 硬件架构）

2.获取开机时间与开机时长

3.获取当前登陆用户

import  os

import  psutil

from datetime import datetime

[20190715190154915.png]: /images/20211210/9bbbf02191a645428113fe96f27ed3c1.png
[201907151902544.png]: /images/20211210/6c1dd8c198aa4380a53661eecf447d51.png
[20190715190545664.png]: /images/20211210/2c322ac8ed184c32810945bc32d32c08.png
[20190715190829721.png]: /images/20211210/1299cc9fa2fe477c9acfd306c79799cd.png
[2019071519104871.png]: /images/20211210/2d868339f32340e8b8634fbc16346172.png
[20190715191127381.png]: /images/20211210/61163d4b66ff44b98f8e91981ed3d65b.png