毫秒级日期求平均值

import time
import datetime

d = ['00:48:53.786', '00:48:53.859']
t = []
sum_t = 0

for i in d:
    # +datatime 的原因是转换出来的时间戳小于系统的初始时间
    # 先将日期转换为毫秒级时间戳放到list中
    dd = datetime.datetime.strptime(i, '%H:%M:%S.%f') + datetime.timedelta(days=36500) 
    ts = int(time.mktime(dd.timetuple()) * 1000.0 + (dd.microsecond / 1000.0))
    t.append(ts)

for i in t:
    # 将时间戳相加求平均值
    sum_t = sum_t + int(i)
    mean_t = sum_t / len(t)


# 再将时间戳转换为日期
mean_t = datetime.datetime.fromtimestamp(mean_t/1000)
print(mean_t.strftime("%H:%M:%S.%f"))