from datetime import datetime
date_str = '2022-04-27_10:40'
#date str --> date time
date_time = datetime.strptime(date_str, '%Y-%m-%d_%H:%M')#'%Y-%m-%d %H:%M:%S.%f'
print(date_time) #2022-04-27 10:40:00
#date time --> utc date time
import pytz
utc_now = date_time.astimezone(pytz.timezone("UTC"))
print(utc_now) #2022-04-27 02:40:00+00:00
#utc date time -->秒级时间戳
int_time = int(datetime.timestamp(utc_now))
print(int_time) #1651027200 10位数是秒级
#秒级时间戳 --> 毫秒级时间戳
int_time = int(round(int_time * 1000))
print(int_time) #1651027200000 13位数是毫秒级
