FAQ: Code Challenge: Lists - Append Size


#1

This community-built FAQ covers the “Append Size” exercise from the lesson “Code Challenge: Lists”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Computer Science
Data Science

FAQs on the exercise Append Size

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#2

I tried this :

def append_size(lst):
size = len(lst)
return lst.append(size)

it returns NONE

Why?


#3

Because the list.append() method does not have a return value. We need to return the list after appending to it.

lst.append(...)
return lst

#4

Thank you Roy for your answers. Just after my post I found the solution. So I could finish this path and it’s because of your help. It was challenging at the beginning but oh so rewarding at the end :slight_smile:
How long have you been programming and with which language did you start?


#5

Before joining CC I developed old-school webs for some local non-profits, learning as I went. HTML/CSS were my first languages, then a few years in I started to learn JS, followed up by PHP. I didn’t really get into learning in depth until I joined here. I learned Python and Ruby here, but have kept my focus on beginner and intermediate level problem solving, hence you see me here on the front line with the newbies.


#6

Great experience ! Thank you for being with us, Roy :slight_smile: (the newbies)