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!

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

what is the purpose of the ".remove" function?

Can't I just delete what I want to delete manually?

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))
messy_list.remove("a")
messy_list.remove(False)
del messy_list[3]

2 Answers

remove function removes the first matching value, not a specific index. del removes the item at a specific index

for example: x = ['a', 'a', 'b'] x.remove('a') => will delete the first 'a' in the list but what if you want to delete the second 'a' in the list, then you have to use del to target that item del x[1] happy coding :)

What if you had 1000s of items or you were working with data that was continually updated on a periodic basis?