[ Python 常見問題 ] Convert local time to another time zone

Source From Here 
Question 
I want to convert the current time to +0900 in Python. What's the appropriate way to do this (assuming in the time module)? 

How-To 
You can use the datetime module instead. Adapted from: 
https://docs.python.org/3/library/datetime.html#datetime.tzinfo.fromutc 
- test.py 

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1. #!/usr/bin/env python  
2. from datetime import tzinfo, timedelta, datetime  
3.   
4. class FixedOffset(tzinfo):  
5.     def __init__(self, offset):  
6.         self.__offset = timedelta(hours=offset)  
7.         self.__dst = timedelta(hours=offset-1)  
8.         self.__name = ''  
9.   
10.     def utcoffset(self, dt):  
11.         return self.__offset  
12.   
13.     def tzname(self, dt):  
14.         return self.__name  
15.   
16.     def dst(self, dt):  
17.         return self.__dst  
18.   
19. fmt = "%Y-%m-%d %H:%M:%S %Z%z"  
20. print datetime.now().strftime(fmt)  
21. print datetime.now(FixedOffset(9)).strftime(fmt)  

Now let's test the sample code above: 

# date +"%Z %z"
CST +0800
# ls -hl /etc/localtime # Check the timezone of host
... /etc/localtime -> ../usr/share/zoneinfo/Asia/Taipei
# ./test.py
2017-02-23 00:18:32
2017-02-23 01:18:32 +0900

Supplement 
* Converting time zones for datetime objects in Python