square brackets in python?

Question

Hi, I'm just starting learning python in these days and I see in the challenges that a lot of codes contain something like [1] or [0] or more generally I don't understand what are them used for

Answer 1

https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2431/?ref=app

Answer 2

List are a structure data type in python,like tuple,set ,string,and dictionnary.Square brackets indicates that we use a list.To create a list give it a variable name and assign it to a collection of data separated by comma inside square brackets.
a = [1,2,"fg",6]