Understanding slice copying in for loop

[yksingh1097]

Hello and welcome!

It's called slicing.
You can slice a sequence in python like this: words[1:4].
That returns all elements from index 1 to index 4. The index 4 is not included.
If you want all elements from index 1 to the end you are doing it like this: words[1:].
Respectively, from the beginning to some index: words[:4].
As you already have guessed the [:] notation is representing the whole sequence. From the beginning to the end. In fact a copy of ( in this case ) the list.

Does that mean there are two lists with same name words?