Added in the description.

Here plaintext letters are from 'a' to 'z' or from 'A' to 'Z'.

I think that this should be indicated in kata describtion. Also, "latin letter" suits here better than "plaintext letter"

The description says:

The action of a Caesar cipher is to replace each plaintext letter ....

Here plaintext letters are from 'a' to 'z' or from 'A' to 'Z'.
Moreover you have passed the Python kata!

Thanks, i'll have a look.

I would recommend reading about character encodings

https://www.joelonsoftware.com/2003/10/08/the-absolute-minimum-every-software-developer-absolutely-positively-must-know-about-unicode-and-character-sets-no-excuses/
https://utf8everywhere.org

Thank you @JonColman94 for the explanation.

I agree with your sentiments, there is an upside to this case being the top solution though. Individuals learning python who read through the comments now understand that writing the most succint code that works doesn't always mean that it is the most efficient.

i like the approach

Anyone else having issues with accents? example: è. if you have any advice please share

I like this solution, it is noob friendly but i don't get the use of string.letters.

great solution

The author should re-evaluate the solution. The solution implies that the increment of depreciation affects the previous month, which seems to contradict the instructions issued. As many have stated, the guidelines should be made clear.

Neat!

This is well written easy to understand code. Thanks mate

Good point mate, definitely didn't think of that.