Python time

说明：python本地时间与UTC时间转换，程序中常用于日志或生成文件命名，待补充完善。
参考小例

# -*- coding: utf-8 -*-

import time
import datetime


class TimeShift:
    def __init__(self):
        pass

    def get_utctime(self) -> datetime.datetime:
        utc_time = datetime.datetime.utcfromtimestamp(time.time())
        return utc_time

    def utctime_format(self) -> str:
        '''
        作用：datetime.datetime格式化成字符串，可用于文件命名
        :return: str
        '''
        utc_fmt = self.get_utctime().strftime("%Y%m%d%H%M%S")
        return utc_fmt

    def get_localtime(self):
        local_time = datetime.datetime.now()
        return local_time

    def localtime_format(self):
        local_fmt = self.get_localtime().strftime("%Y%m%d%H%M%S")
        return local_fmt

    def utc2local(self, utc_st) -> datetime.datetime:
        '''
        作用：将utc时间转换成本地时间
        :return: 返回本地时间
        '''
        now_stamp = time.time()
        local_time = datetime.datetime.fromtimestamp(now_stamp)
        utc_time = datetime.datetime.utcfromtimestamp(now_stamp)
        offset = local_time - utc_time
        local_st = utc_st + offset
        return local_st

    def local2utc(self, local_st) -> datetime.datetime:
        '''
        作用：将本地时间转成utc时间
        :return: 返回utc时间
        '''
        time_struct = time.mktime(local_st.timetuple())
        utc_st = datetime.datetime.utcfromtimestamp(time_struct)
        return utc_st

    def print_sep(self, num=50):
        line_sep = "-" * num
        print(line_sep)

    def main(self):
        utc2local = self.utc2local(self.get_utctime())
        local2utc = self.local2utc(self.get_localtime())
        print("utc time: %s" % self.get_utctime())
        print("local time: %s" % self.get_localtime())
        self.print_sep(40)
        print("utc2local time: %s" % utc2local)
        print("local2utc time: %s" % local2utc)
        self.print_sep(40)
        print("utctime format time: %s" % self.utctime_format())
        print("localtime format time: %s" % self.localtime_format())


if __name__ == '__main__':
    timeshift = TimeShift()
    timeshift.main()

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返回结果：

utc time: 2020-04-19 03:09:34.915714
local time: 2020-04-19 11:09:34.915714
----------------------------------------
utc2local time: 2020-04-19 11:09:34.915714
local2utc time: 2020-04-19 03:09:34
----------------------------------------
utctime format time: 20200419030934
localtime format time: 20200419110934

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