import time
timeStamp = 1646926800
timeArray = time.localtime(timeStamp)
otherStyleTime = time.strftime("%Y-%m-%d %H:%M:%S",timeArray)
print(otherStyleTime)
结果：
2022-03-10 23:40:00
第二种方式：
import datetime
timeStamp = 1646926800
dateArray = datetime.datetime.utcfromtimestamp(timeStamp)
otherStyleTime = dateArray.strftime("%Y-%m-%d %H:%M:%S")
print(otherStyleTime)
结果：
2022-03-10 15:40:00