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

Moving a datetime to another timezone got this error "`paris, isn't a datetime" [Solved]

Where did I get it wrong? Did I misunderstood the instruction? Following is the challenge and my answer which got error.

Challenge Task 2 of 2:

Great, but replace just sets the timezone, it doesn't move the datetime to the new timezone. Let's move one. Make a new timezone that is UTC+01:00. Create a new variable named paris that uses your new timezone and the astimezone method to change hill_valley to the new timezone.

My answer:

import datetime

naive = datetime.datetime(2015, 10, 21, 4, 29)
us_pacific = datetime.timezone(datetime.timedelta(hours=-8))
hill_valley = datetime.datetime(naive.year, naive.month, naive.day, naive.hour, naive.minute, tzinfo=us_pacific)
paris = datetime.timezone(datetime.timedelta(hours=1))
hill_valley.astimezone(paris)

I just got the answer to this.

import datetime

naive = datetime.datetime(2015, 10, 21, 4, 29)
us_pacific = datetime.timezone(datetime.timedelta(hours=-8))
hill_valley = datetime.datetime(naive.year, naive.month, naive.day, naive.hour, naive.minute, tzinfo=us_pacific)

new_timezone = datetime.timezone(datetime.timedelta(hours=1))
paris = hill_valley.astimezone(new_timezone)