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

Posted by Kudakwashe Mungwariri
Kudakwashe Mungwariri
4,951 Points

comprehension question.Please help

Please help.i cant find the error

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

def area(x):
    for a in x:
        a*a
    return a*a

areas = [area(x) for x in dimensions]

1 Answer

William Li
William Li
7,950 Points
William Li
William Li
7,950 Points

You are trying to create a function which multiplies the first item in the tuple with the second item.

There is no need for a 'for' statement or the last line of code you wrote.

Here's how I would solve the question:

 def area(x):
    return x[0]*x[1]
Kudakwashe Mungwariri
Kudakwashe Mungwariri
4,951 Points

cool.got it.Thanks