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 and Filter Comprehension

Posted by Jose Coto
Jose Coto
11,466 Points

Fahrenheit to celsius

I am trying to make a list with only the Celsius values that are within a range. I'm trying to do it with a list comprehension but the code down does not seem to work.

2 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

Here's one solution:

# ipython3 fahrenheit to celsius

In [26]: lower_limit = 1

In [27]: upper_limit = 200

In [28]: fahrenheit = [-40, 0, 32, 122, 212]

In [29]: celsius = [(x-32)*5/9 for x in fahrenheit if x > lower_limit and x < upper_limit]

In [30]: celsius
Out[30]: [0.0, 50.0]
Jose Coto
Jose Coto
11,466 Points
Jose Coto
Jose Coto
11,466 Points

Hi Chris,

Thanks for your help, as always. Your solution works, of course. I just was wondering why mine didn't given that, in essence, is the same as yours.

Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

Can you post your code. Let's figure out what's different