This goes versus python's mantra of "express is a lot better than implicit". Or use Specific syntax to make reference to instance variables as in Ruby. Nevertheless Python tries to continue to keep syntax characters to the minimum (nowadays it is introducing additional syntax, like assignment expressions and kind hinting). https://self-adhesive-mini-trunki01223.tkzblog.com/37227519/the-2-minute-rule-for-accessory-boxes