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 Python Collections (2016, retired 2019) Lists Removing items from a list

Shane Smith
Shane Smith
4,384 Points

How do i remove different types from a list?

cant seem to get this to work...

lists.py
messy_list = ["a", 2, 3, 1, False, [1, 2, 3]]

# Your code goes below here
messy_list.insert(0, messy_list.pop(3))
test_list = messy_list.copy()
for item in test_list:
    if item == list or item == str or item == bool:
        messy_list.remove(item)

2 Answers

Steven Parker
Steven Parker
230,995 Points

You're close, but instead of comparing the item itself, you'll want to compare the type of the item:

    if type(item) == list or type(item) == str or type(item) == bool:

Optionally, you could make the test more compact by looking for everything with a type other than what you want to keep:

    if type(item) != int: