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

import re
from datetime import datetime, timezone, timedelta

def to_timestamp(dt_str, tz_str):
    hours = float(re.search(r'UTC(.+?):', tz_str).group(1))
    tz_dt = datetime.strptime(dt_str,'%Y-%m-%d %H:%M:%S').replace(tzinfo=timezone(timedelta(hours=hours)))#设置时区
    return tz_dt.timestamp()


# 测试:

t1 = to_timestamp('2015-6-1 08:10:30', 'UTC+7:00')
assert t1 == 1433121030.0, t1

t2 = to_timestamp('2015-5-31 16:10:30', 'UTC-09:00')
assert t2 == 1433121030.0, t2

print('Pass')