[Tutor] Python Challange - ord chr incrementing alphabet

[Paul D. Kraus]

I just started doing the python challenges and was doing the one where the
hint is 3 letters each shifted two places to the right.
No big deal just ord / chr and some tests to handle looping past z.

I got my answer. Then reading the solutions i see that they suggest that the
best way would be to use string.maketrans()
I just can't figure this out. What does this do and how would it help with
this problem?

Paul
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