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) Let's Build a Timed Quiz App Harder Time Machine

Damien Blasko
Damien Blasko
8,519 Points
Posted by Damien Blasko
Damien Blasko
8,519 Points

's' is an invalid keyword for this function. Why? Must I create a complicated branching structure for this function?

There must be a better, and more concise way, to create this function, than to construct complex branching structures, which is my only alternative if I cannot use an argument to the function as a named input variable to datetime.timedelta

Can anyone offer any insight?

time_machine.py 
import datetime

starter = datetime.datetime(2015, 10, 21, 16, 29)

# Remember, you can't set "years" on a timedelta!
# Consider a year to be 365 days.

## Example
# time_machine(5, "minutes") => datetime(2015, 10, 21, 16, 34)
def time_machine(i, s):
    my_timedelta = datetime.timedelta(s=i)
    return starter + my_timedelta

1 Answer

Steven Parker
Steven Parker
230,995 Points
Steven Parker
Steven Parker
230,995 Points

I'm not sure what you mean by "complicated branching structure", but the only special case you need to account for is when the specified units are "years". So you will probably need one conditional test.