Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Dates and Times in Python (2014) Where on Earth do Timezones Make Sense? Datetime Awareness

Peter Tram
PLUS
Peter Tram
Courses Plus Student 6,898 Points
Posted by Peter Tram
Peter Tram
Courses Plus Student 6,898 Points

What's wrong? Got a bummer with valueError

d

aware.py 
import datetime

naive = datetime.datetime(2015, 10, 21, 4, 29)
pacific = datetime.timezone(datetime.timedelta(hours=-8))

hill_valley = naive.astimezone(pacific)

1 Answer

Brian McKinney
Brian McKinney
10,119 Points
Brian McKinney
Brian McKinney
10,119 Points

The key here is that astimezone can only be applied to timezone aware date times. So you need to "replace" a None timezone value with the pacific one you just created. Think of this as converting a date time from naive to time zone aware. 

naive = datetime.datetime(2015, 10, 21, 4, 29)
pacific = datetime.timezone(datetime.timedelta(hours=-8))
hill_valley = naive.replace(tzinfo=pacific)