python 时间元组转化为时间戳、字符串
1、时间元组 --> 时间戳
import time
timeArray = time.localtime(time.time())
timeStamp = time.mktime(timeArray) # 时间戳：1600858387.0
2、时间元组 --> 字符串
timeDate = time.strftime("%Y-%m-%d %H:%M:%S", timeArray) # datetime.datetime：'2020-09-23 18:53:07'
timeDate = time.strftime("%Y-%m-%d", timeArray) # datetime.date：'2020-09-23'