Python unix time and strftime convert

beijing_time.md

import time
from datetime import datetime
import pytz

In [14]: t = datetime.fromtimestamp(1546751128, pytz.timezone('Asia/Shanghai')).strftime('%Y-%m-%d %H:%M:%S')
In [15]: t
Out[15]: '2019-01-06 13:05:28'

time.md

import time
from datetime import datetime

format = '%Y-%m-%d %H:%M:%S'

In [46]: time.mktime(datetime.strptime('2018-11-23 12:00:00', format).timetuple())
Out[46]: 1542945600.0

In [53]: datetime.utcfromtimestamp(time.time())
Out[53]: datetime.datetime(2018, 11, 25, 11, 52, 9, 527595)

In [57]: int(d.now().strftime('%s'))
Out[57]: 1543146992

I google it every time I convert a timestamp to string format. So I mark it down.