[ Python 常見問題 ] How to set timezone to eastern for DateTime module in python?

Source From Here
Question
I'm utilizing the datetime module to produce the current date. Is any way to setup the different timezone in this module?

How-To
Your date is a "naive" datetime, it doesn't have a timezone (tz=None). Then you have to localize this datetime by setting a timezone. Use pytz module to do that.

>>> from datetime import datetime
>>> from pytz import timezone
>>> fmt = '%Y-%m-%d %H:%M:%S %Z%z'
>>> print "Native timezone: %s" % datetime.now().strftime(fmt)
Native timezone: 2017-02-19 16:45:25
>>> print "Timezone(US/Eastern): %s" % datetime.now(eastern_tz).strftime(fmt)
Timezone(US/Eastern): 2017-02-19 03:45:29 EST-0500

From the Linux, you can check your default timezone by (Take CentOS7 for example):

# date +'%:z %Z'
+08:00 CST
# ls -hl /etc/localtime
lrwxrwxrwx. 1 root root 33 Oct 7 09:16 /etc/localtime -> ../usr/share/zoneinfo/Asia/Taipei