#将2022年3月7日 11点0分0秒转为秒

import datetime, time
year = 2022
moth = 3
day = 17
hour = 11
minute =  0
second = 0

t = datetime.datetime(year, moth, day,hour,minute,second)

print(time.mktime(t.timetuple()))

结果 1647486000.0 是一个float