when googling for examples of imperative vs declarative programming in python…!
nice article
https://blog.newrelic.com/engineering/python-programming-styles/
and another article
https://www.benfrederickson.com/python-as-a-declarative-programming-language/
so: declarative, avoid for-loops
yes, or no? :O
https://medium.com/python-pandemonium/never-write-for-loops-again-91a5a4c84baf
flat is better than nested