51 lines
1.1 KiB
Python
51 lines
1.1 KiB
Python
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#!/usr/bin/env python
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# -*- encoding: utf-8 -*-
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"""
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Topic: 日期时区和本地化
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Desc :
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"""
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from datetime import datetime, timedelta
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from pytz import timezone
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import pytz
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def tz_local():
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d = datetime(2012, 12, 21, 9, 30, 0)
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print(d)
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# Localize the date for Chicago
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central = timezone('US/Central')
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loc_d = central.localize(d)
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print(loc_d)
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# Convert to Bangalore time
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bang_d = loc_d.astimezone(timezone('Asia/Kolkata'))
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print(bang_d)
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# 夏令时
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d = datetime(2013, 3, 10, 1, 45)
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loc_d = central.localize(d)
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print(loc_d)
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later = loc_d + timedelta(minutes=30)
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print(later)
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# 使用normalize修正这个问题
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later = central.normalize(loc_d + timedelta(minutes=30))
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print(later)
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# 一个普遍策略是先转换为UTC时间，使用UTC时间来进行计算
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print(loc_d)
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utc_d = loc_d.astimezone(pytz.utc)
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print(utc_d)
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later_utc = utc_d + timedelta(minutes=30)
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# 转回到本地时间
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print(later_utc.astimezone(central))
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# 根据ISO 3166国家代码查找时区名称
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print(pytz.country_timezones['IN'])
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if __name__ == '__main__':
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tz_local()
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