Need help with Thread Shed project

project link (

Here is the code:

I have a question about steps 8 and 9 of this project
In the code it is from line 120 to line 129 (i commented around that)

It works, but somehow, i dont understand, what is happening in the inner cycle.
Is it replacing string[i] with string[i].strip?

yes, you are updating element in the string list with the stripped version.

At first, i thought that i couldn’t do that because it would change the string
Soo, we basically put new element into the place of the old one?

if we look at the documentation:

7.1. string — Common string operations — Python 2.7.18 documentation

wee see strip returns a copy of the string.

Lists on the other hand are mutable, so we do update the list (replacing old by new)

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Thank you for clarification! :slight_smile:

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