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I've always thought that appending a list to another one meant copying the objects from the first list and then pointing to the appended list as described for example here. However, in this blog post and in its comment, it says that it is only the pointers that are copied and not the underlying objects. So what is correct?
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append() adds a list inside of a list. Lists are objects, and when you use . append() to add another list into a list, the new items will be added as a single object (item).
append() the original list is modified. The method does not create a copy of the list – it mutates the original list in memory.
It's very easy to add elements to a List in Python programming. We can append an element at the end of the list, insert an element at the given index. We can also add a list to another list. If you want to concatenate multiple lists, then use the overloaded + operator.
The Python List append() method is used for appending and adding elements to the end of the List. Parameters: item: an item to be added at the end of the list.
Drawing from Snowbear's answer, a more accurate image of combining two lists (than the one presented in the first referred article in the question) would be as shown below.
let FIRST = [1;2;3]
let SECOND = [4;5;6]
let COMBINED = FIRST @ SECOND
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