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 Functional Python Functional Workhorses attrgetter

Posted by Rutendo Chaurura
Rutendo Chaurura
6,809 Points

help me

Use sorted() and attrgetter() to sort date_list by the day attribute of each datetime object. Save this sorting into a variable named sorted_dates

sorting.py 
import datetime
from operator import attrgetter

date_list = [
    datetime.datetime(2015, 4, 29, 10, 15, 39),
    datetime.datetime(2006, 8, 15, 14, 59, 2),
    datetime.datetime(1981, 5, 16, 2, 10, 42),
    datetime.datetime(2012, 8, 9, 14, 59, 2),
]
sorted_dates = sorted(datetime.datetime, key=attrgetter('day'))

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

You have the right idea, but the first argument to "sorted" must be the thing that you are going to sort, which in this case is the "date_list":

sorted_dates = sorted(date_list, key=attrgetter('day'))