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 Python Collections (Retired) Dungeon Game Random Choices

Code works when run on console, but doesn't pass challenge. Any ideas why?

As above, the code works when run in console workspaces but does not pass the code challenge. Why do you think this is? Do you think it is because the challenge is not asking for the use of a count and while loop? Thanks.

import random

integer = random.randint(1, 50)
iterable = list(range(50))
random_list = []

def nchoices(integer, iterable):
    count = integer
    while count > 0:
        random_value = random.choice(iterable)
        count -= 1

nchoices(integer, iterable)

3 Answers

Here is what I did:

import random

def nchoices(iterable, num):
    items = []
    count = 0
    while count < num:
        items.append(iterable[random.randint(0, len(iterable))])
        count += 1

    return items
Matthew Hill
Matthew Hill
7,799 Points

You've declared your list outside of your function, and then you're printing it, this isn't really what the question is asking you to do. You need to return a list of randomly selected items. Therfore the list needs to be created/appended within your function and then sent back. Matt

import random

integer = random.randint(1, 50) iterable = list(range(50))

def nchoices(integer, iterable): count = 0 random_list = [] while count < integer: random_value = random.choice(iterable) random_list.append(random_value) count += 1 return(random_list)

^ I have fixed that and created/appended within function but how come it still doesn't pass? Thanks : )

Matthew Hill
Matthew Hill
7,799 Points

Hi Alex, hard to see what's going on without your response properly formatted but try removing your declarations for integer and iterable, these will be given to you, you don't need brackets around your return value, and double check your formatting. If this still doesn't work can you post your error code? Cheers, Matt

If it works in workspace but not the challenge then it is probably because you didn't follow the instructions exactly as they have it.