# -*- coding: utf-8 -*-
import re
from datetime import datetime, timedelta
class TimeUtil(object):
@classmethod
def parse_timezone(cls, timezone):
"""
解析時區表示
:param timezone: str eg: +8
:return: dict{symbol, offset}
"""
result = re.match(r'(?P<symbol>[+-])(?P<offset>\d+)', timezone)
symbol = result.groupdict()['symbol']
offset = int(result.groupdict()['offset'])
return {
'symbol': symbol,
'offset': offset
}
@classmethod
def convert_timezone(cls, dt, timezone="+0"):
"""預設是utc時間,需要"""
result = cls.parse_timezone(timezone)
symbol = result['symbol']
offset = result['offset']
if symbol == '+':
return dt + timedelta(hours=offset)
elif symbol == '-':
return dt - timedelta(hours=offset)
else:
raise Exception('dont parse timezone format')
if __name__ == '__main__':
utc_now = datetime.utcnow()
now = datetime.now()
convert_now = TimeUtil.convert_timezone(utc_now, '+8')
print('utc_now ', utc_now)
print('now ', now)
print('convert_now', convert_now)
"""
utc_now 2021-01-27 03:26:13.132189
now 2021-01-27 11:26:13.132198
convert_now 2021-01-27 11:26:13.132189
"""