廖雪峰Python教学课后作业---datetime

# -*- coding: utf-8 -*-
import re
from datetime import datetime, timezone, timedelta

def to_timestamp(df_str, tz_str):
    cday = datetime.strptime(df_str, '%Y-%m-%d %H:%M:%S')
    tz_hour = re.match(r'^(UTC)([\+\-]\d{1,2})[:](\d{2})$', tz_str)
    tz_utc_x = timezone(timedelta(hours=int(tz_hour.group(2))))
    utc_time11 = cday.replace(tzinfo=tz_utc_x)
    return (utc_time11.timestamp())

# if __name__ == '__main__':
#     t1 = to_timestamp('2015-6-1 08:10:30', 'UTC+7:00')
#     print(t1 == 1433121030.0)
#     t2 = to_timestamp('2015-5-31 16:10:30', 'UTC-09:00')
#     print(t2 == 1433121030.0)

# 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('ok')

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