python3.8.2 插入1970年前时间到数据库

import datetime

STD_TIME = datetime.datetime(1970, 1, 1, 0, 0)

st_tm = datetime.datetime(y, M, d, h, m)

dt = (dst_tm - STD_TM).total_seconds()

sql = 'select DATEADD(SECOND, {0}, dt, CAST('1970-01-01 00:00:00' AS datetime))'.format(dt)

# etc. options

处理字符串cast到datetime时出现的out of range的问题