[Python] How to decode a text in python3?

I have a text Aur\xc3\xa9lien and want to decode it with python 3.8.

I tried the following

import codecs
s = "Aur\xc3\xa9lien"
codecs.decode(s, "urf-8")
codecs.decode(bytes(s), "urf-8")
codecs.decode(bytes(s, "utf-8"), "utf-8")


but none of them gives the correct result Aurélien.

How to do it correctly?

And is there no basic, general authoritative simple page that describes all these encodings for python?

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