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 Map Comprehension

Stefan Vaziri
Stefan Vaziri
17,453 Points
Posted by Stefan Vaziri
Stefan Vaziri
17,453 Points

Have no idea how to do this

I think you use the for loop like how Kenneth did in the video and the attrgetter method but I don't know how to get [0] and [1] pair in the dimensions list to multiply.

maps.py 
from operator import attrgetter
dimensions = [
    (5, 5),
    (10, 10),
    (2.2, 2.3),
    (100, 100),
    (8, 70),
]

def area(argument):
    dimensions_result = (dimensions, key_attrgetter([0]*[1]))
    return dimensions_list

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

There are two parts to this challenge. The first part does not involve the dimensions list.

Just a simple function:

def area(arg):
    return arg[0] * arg[1]