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Is python lambda “really formal” λ-calculus or just share the name?

Now and then I use the Python lambda. Is it so formal that it is safe to say that you can do formal lambda calculus with it? I just used it but I didn’t fully understand whether the python lambda and the lambda calculus like I read was done by Alonzo Church. I also used it in Javascript, I think. Isn’t this more common in functional languages (e.g. Haskell, Scheme/Lisp, Clojure…) and I never saw lambda in use with Java or C(++)?

How to model and query spatial responsibilites of company local branches

what are best practices, to model and query spatial responsibilities of company local branches?
My company has many local branches which are all in general responsible for 1 city. This is the easiest case. However, there are some exceptional cases. Here’s a list of all possible cases: