Python uses module Pytz to convert time zones

Preface

Recently encountered a problem: my server and client not in a time zone, server time zone is EDT, that is, the Eastern time zone, client is my own computer, time zone is the Chinese standard Time zone, East eight district. In the test need, I need to server send a time to make the server at this time stamp to perform some actions. This timestamp is usually the current time plus 2 minutes or a few minutes.

Usually the United States East in daylight saving time, and we are 12 hours apart, so directly minus the 12 hours, and then add two minutes, can be sent based on server the timestamp, but only half of the time is daylight savings, so consider or based on the time zone. Baidu a bit, Python has a module pytz is time zone-related, but not the builtin method, so need to install a bit.

1. Install PYTZ,PIP installed Pytz first.

2. Try the water and print out the U.S. time zone:

#-*-coding:utf-8-*-#/usr/bin/env pythonimport pytzprint (pytz.country_timezones (' Us ')) #[u ' America/New_York ', U ' america/detroit ', U ' America/kentucky/louisville ', U ' America/kentucky/monticello ', U ' america/indiana/ Indianapolis ', U ' america/indiana/vincennes ', U ' America/indiana/winamac ', U ' America/indiana/marengo ', U ' america/ Indiana/petersburg ', U ' America/indiana/vevay ', U ' America/chicago ', U ' america/indiana/tell_city ', U ' America/Indiana /knox ', U ' America/menominee ', U ' america/north_dakota/center ', U ' America/north_dakota/new_salem ', U ' America/North_ Dakota/beulah ', U ' america/denver ', U ' america/boise ', U ' America/phoenix ', U ' america/los_angeles ', U ' america/ Anchorage ', U ' America/juneau ', U ' America/sitka ', U ' America/metlakatla ', U ' america/yakutat ', U ' america/nome ', U ' America/adak ', U ' pacific/honolulu ']

It's a lot of places, but since it's east, it's good to choose New York directly.

3. Next, print the current time of the United States East.

#-*-coding:utf-8-*-#/usr/bin/env pythonimport pytzimport Timeimport Datetimetz = Pytz.timezone (' America/New_York ') a = Datetime.datetime.now (TZ). Strftime ("%y-%m-%d%h:%m:%s") print (a)

#2016-08-18 02:26:53

4. Convert the time to seconds, add 120 seconds, and then convert back to standard format:

#-*-coding:utf-8-*-#/usr/bin/env pythonimport pytzimport timeimport datetimeprint (pytz.country_timezones (' Us ')) TZ = Pytz.timezone (' america/new_york ') a = Datetime.datetime.now (TZ). Strftime ("%y-%m-%d%h:%m:%s") print (a) b=time.mktime (Time.strptime (A, '%y-%m-%d%h:%m:%s ')) +int (2) *60print (Time.strftime ("%y-%m-%d%h:%m", Time.localtime (b)))

#2016-08-18 02:28