Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python

Elizabeth McInerney
Elizabeth McInerney
3,175 Points

time_worked

In the video Manipulating Time Already, in Dates and Times, I don't understand how he can use a dir on time_worked when time_worked is just a variable set to an equation (datetime.datetime.now() - treehouse_start).

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,167 Points

Something to remember: Everything in Python is an object. When assigning a variable it is going to be some object based upon the objects used in the equation. There is a bit of magic involved with datetime. When two datetime objects are added or subtracted the result is a timedelta object. You can use timedelta objects to directly add and subtract to other datetimeand get a datetime object result.

datatime.datetime.now() yields a datetime object

  • If treehouse_start is a datetime object, time_worked will be a timedelta object.
  • If treehouse_start is a timedelta object, time_worked will be a datetime object.

So the dir() is returning the attributes of the datetime object.