时间相关

1、用localtime，设置时区

os.environ['TZ'] = "Asia/Shanghai"
time.tzset()

2、时间元组转化为时间格式

def dateformat_trans(tformat, date):
    newdate = time.strftime(tformat, date)
    return newdate


data_tuple = (2008, 2, 13, 0, 0, 0, 0, 0, 0)
print (dateformat_trans("%Y%m%d", data_tuple))

3、时间整形转化为时间格式

dtstr = "20130415172559"
dt = datetime.datetime.strptime(dtstr, "%Y%m%d%H%M%S")
print(dt)

2013-04-15 17:25:59

import datetime
def dateformat_trans(date_str):
    dtstr = date_str + "000000"
    dt = datetime.datetime.strptime(dtstr, "%Y%m%d%H%M%S")
    date_str = str(dt)[:10]
    return date_str
print(dateformat_trans("20190313"))